2023 Honda Civic Si Review - Can Bolt Ons And A Tune Fix Its Biggest Weakness?

[@feelsgoodS2K]

that rev hang is absolutely ridiculous. Can't understand how it left the factory like that

[@Marbind]

Blame EPA

[@captainmexicoXD]

Exactly, EPA. FA wrx suffered from rev hang, too.

[@enmass90]

@@captainmexicoXDbut the VB doesn’t. So I’m not sure it’s an EPA only problem. Unless Subaru figured out some kind of magic to eliminate rev hang while still meeting emissions targets. It’s certainly possible since the VB has an all new drivetrain. Maybe higher displacement with lower boost targets is the solution.

[@ps3alphagamer12]

@@captainmexicoXDneat thing about the va wrx and most modern cars with rev hang, is they program the ecu to drop the rpm’s to exactly where it’s needed all you need to do is drop the clutch faster. Not a clutch kick but about twice as fast as you normally would in a car without rev hang. The car is waiting on you not the other way around.

[@AstroZombie1]

Are all the bolt ons much less than simply getting a type r? Geez 🤦🏻‍♂️

[@SteremyJeele]

People complained about rev hang in the VA WRX and the GR86/BRZ, but this is a whole new world of rev hang. It's like a full second before it starts to dip, absolutely crazy.

[@Manvswild11]

It’s terrible but people are comparing BRZ to cars like the S2k which is a big difference between the two

[@brockz22]

I had a 2016 VA and that rev hang you referenced was bad. Cobb improved it with a tune but it was still jerky when pushing the car hard. A lighter flywheel would be the mechanical fix for rev hang. I put a twin disc clutch with a lighter flywheel in my '06 DC5S K20Z1 and the RPMs drop two to three times faster than the stock clutch flywheel did.

[@X3N1TH]

@SteremyJeele I dont know if they changed anything electronically or mechanical for the newer models, but mine barely has this issue

[@sick_1955]

There doing this on purpose so your not really trying to race it honda for everyone claiming there car is track inspired it's absolutely depressing

[@gambit_toys6554]

The SI's biggest strength is the MPG's you get for the power. If you want big power out a 1.5 engine, you need to Build the engine.

[@Omaba_Baba]

FACTS. 40mpg hwy with still getting 200 hp and torque is nice. My k20A3 couldnt do that. It was 160/132 and best it got was 33 mpg. Going 60!!! You go over that, and the 5 speed had you at 4.2k rpm at 75.

[@X3N1TH]

my K20Z3 never made it over 27mpg 😂​ absolutely loving my 11th gen @@Omaba_Baba

[@Group_Anonymous]

It’s a 1.5 😂

[@Javiwho1]

@@Group_Anonymous yes is 1.5 but it's stronger and faster than you think it has two crankshafts with a couple of upgrades trust me it will make your jaw drop!

[@Omaba_Baba]

@@Group_Anonymous if built well, it way stronger I or H beam forged rods, its actually a ridiculously efficient engine. You can get 300 hp and mid to high 30s in economy. Yeah, a 2 or 2.4 liter is way better, for strength and power... but its not as efficient. I am curious what a 2.0 liter L"20"C would be like.... Hmmm

[@lancegreenemusic]

I had a ‘21 civic sport hatch with the 1.5t. I tuned to it to +9psi with hondata which also fixed the rev hang. Peak boost would’ve been at 25.5 psi and I never had an issue. No other mods. Such an easy performance upgrade. Great car!

[@Newyen6MT]

I'm surprised they didn't remove the rev hang with the tune.

[@macaron3141592653]

Its still fundamentally a physical issue. It needs a lighter flywheel.

[@ramzH95]

@@macaron3141592653 not really. This guys tune is fucked; im on 18PSI ktuner and have nowhere close to this amount of rev hang, its practically gone. Rev match enabled also makes the hang worse, I keep it disabled since it messes with the tune, i should make a video of my car tbh. This one is atrocious

[@turtleman2564]

@@macaron3141592653 it's partly but it's mainly caused by how the manufactures tunes the throttle body, it's for emissions reasons, they need to keep the throttle open longer and have it take longer to open because engines will run rich or lean with mechanical throttle bodies, a lightweight flywheel does do some to help the revs drop fasters but the issue mainly lies in the throttle body.

[@yeeksquad6558]

@@macaron3141592653why did bro get a type r clutch a stock flywheel ?

[@feelthatfeelthat]

For me its all about handling and mpg and the SI excells at that as a daily driver. Its a really really really enjoyable daily for me.

[@sn4rl277]

Daily driving the Integra Type-S is the winner hands down. The Si is a budget buy for sure, but the L15 is a flawed engine with the Turbo on it. It's not a matter of if but when the headgasket will blow.

[@CristianBorrageiros]

@@sn4rl277 The head gasket issue is not common. The L15 is one of the most reliable engines on the market, as long as you don't go past 300 horsepower, or drive it recklessly. I own a 2023 Si as a daily with 50k Miles, not a single issue, intake and cat back, no tune. I bash it on weekends, looks, and drives like brand new. If you want to get any reliable power from this car, you need to fully build the motor. Pistons, Rods, and most importantly Transmission upgrades. These Engines weren't designed for performance, mainly efficiency. With enough Money though and fully built motor, you'd be surprised what this block can handle

[@Watts24fps]

@@sn4rl277for the price of an integra type s why not just go type r at that point? Two different markets. SI much cheaper

[@remissiveslave]

Rev hang RUINS the driving experience. It's a MUST to have a good driving experience.

[@dreww47]

@@sn4rl277you have zero evidence to support your claim. These cars will easily go 150k+ with little to no maintenance. Replace the head gasket with ARP studs and go another 200k…

[@opmike343]

The rev-hang is a complete and total dealbreaker. The ENTIRE POINT of the continued existence of the manual transmission in the modern world is the engagement and Honda has a long history of having really engaging manual transmissions. Is there some rule that modern consumer goods MUST have some little irksome trait that will bug the hell out of you? If we have an ICE Civic with a manual transmission for the next generation, I'd be willing to bet money they will fix the Rev Hang but will bury the HVAC and radio controls behind an infotainment screen AGAIN 😂

[@UnrelatedNonsense]

Honda have had bad rev hang in all of their manuals since 06.

[@housedelete7728]

​@@UnrelatedNonsense Def. Got that tuned out of my 8th Gen.

[@Unicornpirate]

EPA is the rule you are asking.

[@TassieLorenzo]

It's just a more literal/conservative interpretation of the emissions regulations than other manufacturers. There were other brands like Porsche cheating the European drive by noise rules with valves that closed at 50kph near the driveby noise test speed (55 kph) and then open again at 60kph, or Hyundai, Mercedes-Benz, Renault, Mini or Jaguar using other techniques around "offroad use modes" with exhausts that pop and bang and carry on, while Honda never did any of that 'nonsense' either. Honda used and uses a *faithful literal interpretation* of the emissions rules regarding rev hang and not allowing unburnt fuel into the exhaust (those pop and bang factory tunes are the exact opposite!), just as they did for the exhaust noise rules. 🙂

[@romeropostali520]

Hmm, not sure what’s going on here. I have a stock 2023 Si, with TSP tune ONLY. Almost no rev hang, dyno’d at 238whp on map3.

[@ravenstylea2]

Rev hang for days. Holy moly

[@GlaxoSmacks]

I had an 06 Civic SI back in the day, the rev hang has been an issue for the SI since all the way back then. Almost 20 years of rev hang is wild.

[@Stormtrooper-oc4vn]

Facts people are saying that it began in the 10th gen lol anything just to hate on it, but i5s been a problem for a long time.

[@Marbind]

Isn’t an issue. Is a requirement that lowers emissions. Blame the EPA

[@a124as]

Former 8th gener here. For daily driving it’s fine. It’s only when you’re trying to shift quickly does it matter

[@RichardEstrella-z3h]

Honda is a joke for this, offer an auto or dual clutch at least so I don’t have to deal with a huge problem. It’s already underpowered and makes absolutely no sound, at least let me shift in peace…..

[@winseng22]

After driving a 10th gen Civic SI coupe, the only things I didn't like about it were the rev hang and the distasteful sound of the engine. Other than those glaring faults, the 10th and 11th gen Civic SIs are so nice, especially for the money.

[@MimikU7812]

I had a 10th gen Civic Si Coupe too and the rev hang issue was such a deal breaker that i traded it in for an Elantra N and i actually never looked back to any Honda product ever since. Dont get me wrong they look good but in performance/price ratio they aren't worth it anymore. A '23 Si with 200hp and tons of rev hang where i live cost 41k(CAD) while a '24 Elantra N with a full 95hp more and absolutely no rev hang and a DCT option cost 42k(still CAD) to me the choice should be obvious. 32k was already too much for the 10th gen Si and now the 11th at 41k is just ridiculous.

[@Stormtrooper-oc4vn]

​@MimikU7812 the people who bought the veloster n in the first year got a steal it was almost the price of a 2020 civic si after that they raised to the price.

[@MimikU7812]

@@Stormtrooper-oc4vn Im not sure if it had issues though, didnt know much about the VN back in those time,i was trying to hate on them so hard im not gonna lie hahaha

[@lgjg7441]

Seems like a weird tune. Everyone in the Integra owners facebook group says that the standard off the shelf Ktuner tunes get rid of rev hang. Might try the Stage 0 one on my Integra soon. The rev hang is the only complaint I have with the driving experience.

[@mynmisoli]

There’s a $18K difference between the Si and the Type R. It makes no sense to compare the two. The L15 motor is great for what it is meant to do.

[@RichardEstrella-z3h]

L15 is junk anyway you look at it, what a waste of money for Honda to develop a POS. It’s weak, makes no sound and has no tuning potential with such weak internals…….

[@mynmisoli]

@@RichardEstrella-z3h It's a turbo charged 1.5 L motor that puts out 200 HP AND gets you 37 MPG on regular gas. Also many cars have gotten over 150K miles on this platform with minimal maintenance. It accomplishes what it was meant to accomplish very well. And you can also find used models for under 20K. Doesn't sound like trash to me.

[@UnrelatedNonsense]

The rev hang can be tuned out to some extent. With the TSP Stage 1+ tune it claims to disable the rev hang but it really just softens it. To get around it, you have to wait like a second after letting off the throttle before pushing the clutch in. The revs will fall normally after that

[@alexp6409]

The rev hang in the Si is not bad during normal driving, but it is much worse when revving it out or with larger throttle inputs, and it really hampers the driving experience

[@TranceFur]

If you have to wait a second, then you’re not getting around the rev hang. You’re just waiting for it to quit hanging

[@Fryn_Hayn]

You can literally turn the rev hang off with Ktuner?? At least on the 10th gen...

[@UnrelatedNonsense]

@@Fryn_Hayn Not an option on 11th gen. I tried

[@ectobluntus]

@@Fryn_Hayn The way I understand it is that it's something inherent in the timing of the engine that can't really be tuned around. I know it isn't a full on Atkinson cycle engine like most modern hybrids, but I think the valves still stay open for part of the compression stroke so there's way less resistance off throttle. The expansion stroke is longer than the compression stroke. Not an expert by any means, that's just my understanding of the modern trend of using inherently more efficient engine designs.

[@Cbrmansc77]

To be honest, i have a CBR1000RR and for performance you cant beat that torque but as a daily driver with fun factor i am considering this car as a daily. The main problem with the hondas is that i was quoted out the door for this civic SI at 37000 with a 5000 "market adjustment" and i walked over to ford and quoted a mustang GT 6 speed out the door at 39500. I know MOD's for some people are fun to do but if you can get a RWD V8 with 200+ more HP. there is only a limit people are willing to go. But great video man and i wish you all the best.

[@N3rdburgring]

When you cross into the high $30k+ range some cars should just fall off the radar entirely, as as much as I like Honda, the Si shouldn’t be anywhere near that

[@steve8803]

@Cbrmansc77 You could get a new wrx for that money. The mustang is a coupe with a useless rear seat space. Not really comparable to a sedan for a practical daily driver. But if it works for your lifestyle, go for it!

[@robertwynn916]

Go to auto nation Honda… their marks ups have a very low cap. Can’t beat it. Their inventory for type R’s and SI’s are just limited. I purchased my SI before it hit the lot.

[@doctorferdinand1003]

I test drove the 10th gen Si. The absurd levels of rev hang made it a deal breaker. Then I wanted an 11th gen Si, the 10k mark ups were an even worse deal breaker. Honda keeps coming so close to making the Si good.

[@simplevoicereviewssvr6418]

Try picking up an older 2016 Honda Accord V6 Coupe 6MT

[@simplevoicereviewssvr6418]

With lower mileage of course

[@st4xor]

Tune + lightweight flywheel (type R retrofit) is the recipe for the 10th gen. I assume you need both for the 11th as well.

[@dominicg2456]

11th gen comes with a single mass flywheel that SHOULD help with rev hang. I wonder if they didn't tune it out?

[@vbucksmaster1019]

for some reason if you blast your ac the rev hang will be less dramatic but also you’re not accelerating as fast as you normally would. not sure why this is a thing but try it in yours and see if it does the same

[@CharlesCA]

I wish the FL5 CTR sounded that good! That sounds fantastic.

[@TT92348]

That thing sounds pretty good! Shame about the rev hang still. Are you getting your hands on an ND3 soon?

[@Zygrene]

On my radar. Will try to get one soon.

[@WatchingYoutubeVid]

@@Zygrene also compare it to a AP2 while youre at it :) /jk

[@steve8803]

@TT92348 that's fake sound pumped in through the speakers.

[@chrisdaxer3984]

I've put about 30,000 miles on my 22 civic si at this point. It is the ultimate daily driver. My only complaint (MASSIVE complaint) is the stock reliability. I am on my 2nd engine and 2nd turbo but it still goes into limp mode about twice a year. I'm sure the original engine and turbo were fine, there must be a hidden electrical gremlin. Also, my B pillar is loose and vibrates constantly, its rlly annoying. Other than that, no complaints. Hopefully the issues with my si are just first model year hiccups as I got the car shortly after they were available for the first time. Y'all need to keep in mind, this is NOT a track car. As a guy in my young 20's I needed an everything car and really wanted something fun. This fits that. I do want a track car and in hopefully about a year I'll be making the money to justify the next level in fast. Do NOT buy this car if you want something genuinely quick and hardcore. I looked into mods and parts to make it that and honestly, I'd rather just use that money on the facelift elantra N once they're available. It'll be faster than an si like the one in the video and be under warranty. My advice with these cars is purchase one if you are looking for a fun daily. Don't waste your money on parts trying to make this thing a type R. The 1.5 is much better than I expected it to be. The rev hang is annoying and yes it is not as fast as a GTI but guys it is so much quicker than the average economy car. You are still getting something that feels quick to a normal person even in bone stock form. Compared to something like a base corolla this thing is a rocket ship. It also handles SOOOO good even in stock form, my buddy's gti is no better in corners than this thing, just faster in a straight line. The mpg is genuinely impressive, I once got 50 on a road trip but average 30 in town and 40 freeway driving, which is worth a lot. Anyways, just my 2 cents. Great car but don't waste your money trying to make it a track weapon.

[@georgevigil7001]

I have a Fiesta ST and put a hybrid turbo in it @35k miles. It’s pushing 26 PSI and makes about 250 whp. It’s at 96k miles now and I drive it everywhere like I stole it. I think the Honda should be able to handle that power. Maybe even 300 but not sure what happens after that. I’m also trying to get an Elantra N facelift. Such a dope car!

[@RemainNameless614]

What does the year of your 11th gen have to do with anything? They haven't even came out with a refresh yet.

[@shiftautomotive854]

could’ve got a bimmer 340i bmw are more reliable than a honda these days

[@chrisdaxer3984]

@@RemainNameless614 Whats the difference between saying 11th gen or 22? Its shorter. Cope. Also talking about first model year issues which is relevant.

[@chrisdaxer3984]

@@shiftautomotive854 Totally different cars. They're cool dont get me wrong but they cost 30k with 50,000 miles. I've also never had an issue with honda's before this. Genuinely think I just have a lemon. Its not even bad the car just turns on a check engine and I wipe the code twice a year. I put 100k miles on a 2018 crv without a single light on the dash, just regular oil changes.

[@xyzebruh1083]

It’s a 1.5L engine and it’s actually impressive that it makes 200hp with no problem at early RPM, I see so many ricer boys ruining these cars with cheap Amazon aero and voiding their warranty immediately with aftermarket tuning. Enjoy the car the way it was designed, go to the track and see what it feels like before you do anything with car. It’s a cheap fun car that’s all it is

[@thosetwodudes]

BTW this review felt totally relevant for my 2019 Accord Sport MT. I've done a ton of mods, and I've easily gained 40-60 horses. I'm really excited for my lightweight flywheel

[@Bamby187]

Wow! That rev hang is ridiculous! I want it even myself lol

[@TheMightyGhost01]

This is why I got the VB WRX instead, plenty of power with a lot of potential

[@jaidedeye]

Agreed. I also bought a VB WRX after test driving the SI. The SI feels really slow. The dirtbag dealer also had markup on the SI. I bought my WRX premium 3k below sticker and 1.9% financing

[@ghetto-lemon]

good choice

[@juanticimo]

I own a 9th gen si with full bolt ons, a 05 blobeye STI, and i just got a VB wrx a month or so ago... on my VB with just an ets intake, cobb and Dmann tune, im running around 315whp on pump... and its awd and a limited... the 11th gen Si is an absolute joke. my 9th gen is so much more true honda than the 11th gen...which is now based on a LX

[@jaidedeye]

@@juanticimo I test drove a new SI before I got my VB. The SI is so slow. It should have come with at least 250hp.

[@andyst.lawrence6856]

​@@jaidedeyeagreed. I had a tenth gen. 250hp is about what you get with a tune and bolt ons. Def quick enough for fun. But that's the limit. If you want more, get a different car

[@Dimelowcrew]

I have a 2020 Civic Si and the 1.5T is really not that bad, you just need good parts, a good tuner and it’ll last. I’ve put about $8k in performance mods and I’m at 350whp (completely stock engine/trans) no issues.

[@Siraymundo]

i got a 2019 si and i’m tryna mod it like yours bro , i love the si its not the fastest but its quick asf i love it , my first manual as well , i’d love the type R but Si i can only afford i jus turned 18😭

[@robob221]

$8,000 in mods for a civic si? 😂😂😂😂😂 you’ve got your priorities all wrong broha. How much money does it take to realize you should have bought a different car. The civic si is not a sports car.

[@Dimelowcrew]

@@robob221 Still cheaper than a type R or other “sports cars” in higher class and it’s much faster 🤣

[@robob221]

@@Dimelowcrew Elantra N, WRX, Gti, Mazda 3 turbo, gr86, mustang eco boost. Plenty of option rather then dumping thousands into a sporty economy car. The civic si is a stretch purchase for most people who can’t go further than 30k. Spilling your paychecks into this car is like going to Mexico and only buying Chipotle.

[@Dimelowcrew]

@@robob221 all those cars you mentioned are sporty economy cars lol. Whats your point? I paid $33k for my car including mods and tuning, which is still cheaper than all those cars you mentioned and much faster than all of them even modded to a certain extend 🤣

[@spookazz]

also asking for some ND3 action brother Zy 🖖

[@mikeyrov5230]

Love my 11th Gen , the TSP stage 1 Tune really woke the car up , it’s not a race car but tons of fun to daily with good MPG and handling is great. I am almost full bolt ons I’ll list the order I should have bought them in. K-Tuner TSP Tune, TSP Downpipe , PRL FP, PLM Intercooler , PRL Short Ram, Remark Exhaust. Happy modding :]

[@HisLightandCo]

I have the 11th gen civic si and the rev hang can most definitely be disabled within the settings. That was the very first thing I disabled when we got it. Couldn't stand it. No more rev hang 💪🏻

[@Jordanmilo]

What are the steps to disabled rev hang?

[@HisLightandCo]

@@Jordanmilo it’s in the driver assist settings menu.

[@Jordanmilo]

@@HisLightandCo you sure? Take a pic. I can’t find it!

[@HisLightandCo]

@@Jordanmilo I gotchu bro.

[@alexp6409]

The only thing you can turn off in the settings is the rev matching for downshifts. That has nothing to do with the rev hang between upshifts.

[@stephenkoss-wm3ii]

I’ve definitely noticed that in my integra tech spec, the rev hang is there but is mitigated dramatically after turning off rev matching

[@andrewrossnagel9433]

Whats the deal with the rev hang? I thought a simple tune can disable it from Ktuner

[@-thetellyou-1445]

Yeah it. Tsp stage 1 dampens it, tsp stage 1.5, completely disabled it. A lighter flywheel you might find in a upgraded clutch kit with bring the revs down faster too

[@andrewrossnagel9433]

@@-thetellyou-1445 good to know 👍

[@jmhatch88]

The rev hang is the reason why I sold my 2020 civic si after a year ownership

[@gbona]

You know you can completely delete it with a ktuner right? Did with mine and it is so much better.

[@jmhatch88]

@@gbona yea I was aware but then the “reliability” of the 1.5 blah blah…

[@riley1733]

I just traded in my 2020 Si Coupe yesterday and a huge reason is because of the rev hang. Made me hate the car. I legit feel relived that it's gone. I have a 2023 WRX now that has no rev hang and I love that car so much better because of it. I regretted getting the Si for a long ass time because of the rev hang. It completely killed the experience for me.

[@raymondamoroso2049]

​@@gbona unfortunately for us '20 owners taking off the rev-hang results in throttle lag/ dead pedal issues when shifting. I was hard pressed on finding a '20 for the wheels, garnishes, red interior inserts, etc,etc. I had heard like yourself with the KTuner I'd be able to take off the rev-hang. I can't begin to tell how devastated I was when I found out the problems with the '20s 3 months into ownership. I've heard everything from; you gotta replace the clutch, you need a custom tune, etc are the workarounds for this problem. I've also heard there's something different about the '20s ECU and that's why there's issues with taking off the rev-hang. I'm hoping in time to find a conclusive answer to fix this cause I really love my '20 and I've put a lot of work/ parts into it.

[@garcimud]

you know you could completely delete it with turning off useless rev matching option.

[@alexp6409]

Why is the rev hang still so bad with the KTuner? Supposedly that’s the fix. I do like the way it sounds now though.

[@whereswaldo9089]

Na it actually doesn't fully get rid of it it just makes it slightly better.

[@alexp6409]

@@whereswaldo9089watching this video, the rev hang almost seems worse than it was in my stock ‘23 when I had it.

[@whereswaldo9089]

@@alexp6409 if it's a base map could be it needs an actual custom tune to fix it or be better.

[@ShaiyanHossain]

odyssey video next please! id also like to ask, thoughts on this kind of modified Si vs an Elantra N?

[@ryanrebel1073]

That is exactly what I am considering too! I wonder how close it would be with these mods and rev hang eliminated VS a stock Elantra N? Would be about the same cost

[@youtubeviewer7489]

Elantra N is a whole different beast and goes toe to toe with the Type R

[@stuarttrapani9330]

To everyone who hates the rev hang, ktuner and hondata help smooth it out! Had the same issue with my stock 10th Gen Si

[@z0mgz0mg]

What did you specifically change with the tune?

[@riley1733]

Hondata does help with it but it's still there to a degree. I had a 2020 Si Coupe and disabled the rev hang with Hondata and it did drive better but it was still there to a degree. Ended up trading in the Si for a 2023 WRX that has no rev hang and I'm already much happier with my vehicle.

[@TornadoOfSouls777]

With all those upgrades, wouldn't have going with a Type R been the better choice?

[@RenshoYT]

To be fair he's probably still 8-10k under the price of a Type R after those mods

[@ShaiyanHossain]

alternatively elantra n

[@TheBb6prelude]

Huge price difference

[@Zygrene]

Valid point. Si with the right mods is definitely still cheaper but finding a Type R at MSRP would still be my choice.

[@mengx94]

Like a built wrx vs sti

[@nateTrh]

All these fbo tunes are good until the rods go bye bye. The L15 has such weak internals and isn't meant to be a performance engine sadly. Honda just cheaped out and adapted the Fit engine for boost.

[@Stormtrooper-oc4vn]

I agree these honda were made for no power but for fun reliability in the canyons and track, and thats were they thrive, suspension upgrades are the way to go and boy is this car and the 10th gen made for that. That's why I have mine it's fun to push around corners more then most cars I've driven even a hellcat unless you are driving sideways lol

[@luism8130]

The 1.5t is not a reliable engine… I highly recommend against modding. These engines aren’t meant to put out a lot of HP. Just search on KZbin, there are numerous mechanics warning against the 1.5t and even with normal use they have issues.

[@anthonyhernandez1953]

Sounds nice ! I can’t really hear the turbo , but I can definitely hear the rev hang , super laggy ! Woah ! I have no right to complain about my 8th gen rev hang after seeing this ! Nice build though ! If he adds an exhaust and gets rid of the rev hang after, that Si would be even better !

[@timlau3534]

you can get rid of the rev hang with the k-tuner

[@alexp6409]

Why does this one still have it so bad then? They just forgot to check the box or something?

[@notsure3535]

Nah. It needs a lightweight flywheel.

[@garcimud]

You can do it without it. Just turn off useless rev matching option.

[@montygeorge4841]

Ive had no issues with rev hang on my 24 Si! Especially in Sport Mode, it really makes the engine much quicker to respond and rev.

[@garcimud]

Most likely you have rev matching off. That's the reason you don't feel rev hang. It is absurd nobody here knows how easy is to fix the issue with rev hang

[@155stw]

That rev hang is a deal breaker. I thought my 06 TSX had bad rev hang but this is on another level. I would opt for a used Golf GTI instead of this car.

[@marcelgosselin7287]

Rev hang makes it sound like 💩

[@steve8803]

@155stw I wouldn't buy a VW, nothing but problems!

[@RemainNameless614]

I mean its not like you was going to get one in the first place.

[@mikecronis]

The classic "fun ratio" is 10:1 (weight to horsepower) To make this car fun using this logic, it needs 290 hp or thereabouts, but getting that little 1.5 there carefully is difficult. Perhaps methanol and "add lightness" by stripping it down a few hundred pounds might get you there by removing interior things, lighter rims, CF trunk and hood?

[@alexrios1737]

Rev hang can easily be removed with Hondata, it’s just one click.

[@garcimud]

turning off rev matching will also fix the rev hang easily

[@Datsun510zen]

Why void the 60K warranty trying to make a 2023 Si into a track car? You could solve all these problems for about the same price of a used 2021 Type R. You'd get a far more capable track car that has full powertrain coverage.

[@mtshark7]

Nice review man! That's a shame about the rev hang.

[@djmuzeek9145]

There is a setting in the interface head unit meaning to turn off the rev hang 😊

[@cadenkillgore6244]

According to Hondata these cars make around 225 horsepower from factory and Honda sandbags the numbers

[@maximus9401]

My 10th gen with tune was able to eliminate the rev hang entirely, but it made the throttle so twitchy and jerky

[@ImpalaSS08]

Before I even watched the video I gonna say only if it added a. 100hp and eliminated the rev hang. Only roughly 50hp but livable now to go with handling.

[@tobinator999]

Hondata tune removes the rev hang and enables no-lift shifting so I don’t know why the owner didn’t just do that 🤷🏻‍♂️

[@djaric]

I ran TSP stage 1 on ktuner on my 10th gen si and it really woke it up. I'm surprised there is still so much revhang with this tune, I had barely any or a reasonable amount anyway. but I upgraded to a type-r before I tossed too much money at it.

[@FC3_RIPPER]

My plans exactly with my 10th gen si. Gonna do basic bolt ons but save the rest of my money for the R.

[@jarredgeis625]

Not sure if its just my 22 Si or what, i noticed a little rev hang when i first started driving it, but the only place i can really tell now is trying to launch fast from 1st to 2nd. You get very used to it. Its a car i plan to have for 10+ years, not something i plan to track. Ultimate daily not an ultimate track car.

[@FDNY101202]

Did Two McLarens drive by and he was just unfazed?...

[@Zygrene]

Typical day in the canyons of Socal!

[@whereswaldo9089]

​@Zygrene oh nice, which area? I live by GMR and azusa canyons

[@Stormtrooper-oc4vn]

Yeah they everywhere in cali when I saw a noble m600 in cali I went crazy for that because that's super rare even here

[@jonmcclane7433]

My 8th Gen had bad rev hang, but when I did a Hondata Reflash it got rid of it.

[@DCPEvo]

Who signed off on that rev hang? Good lord.

[@brandondannys-menary3678]

All that work yet he didn’t tune out the rev hang?

[@garcimud]

He could, if he could have known to turn off the rev match, that would completely remove rev hang

[@kradios09]

All of those mods to make 30 less than my VB wrx did off the showroom floor is wild.

[@RCdopenutz]

I eliminated most of my rev hang through ktuner. I thought custom tunes could do that too.

[@garcimud]

you didn't have to pay $1000 to get rid off it . Simple rev matching turned off would fix it.

[@RCdopenutz]

@ i didnt pay that much to get rid of rev hang that was just one of the benefits. Main reason was to run flex fuel

[@garcimud]

@@RCdopenutz I don't understand you. Why rev hang is a benefit?

[@RCdopenutz]

@ removing it

[@garcimud]

@@RCdopenutz ??? removing the rev hang or rev matching? you wrote rev hang! rev matching is useless option. it was introduced recently and you can live without it. Plus it is more fun when you are manually rev matching.

[@riley1733]

I just traded in my 2020 Si Coupe for a 2023 Subaru WRX. I had the Si for about 2 and a half years and as much as I hate saying this, it's the absolute worst vehicle I've owned and driven because of the rev hang. I regretted buying that car immensely because of that. Honda, do better. You guys don't need rev hang in any vehicles. It makes the car drive like crap and it makes it crazy annoying to drive. How bad the rev hang is in these cars makes me feel relieved I don't have the Si anymore (WRX has no rev hang whatsoever and is so much more fun to drive because of it).

[@mean3g161]

If he's on just a Ktuner OTS then he's already missing out on power with a real tune. Rev hang as well gets turned off with a real tune which I dont think is eliminated with ktuner ots tunes

[@Vamp7814]

This is good information to know about the rev hang. That’s pretty bad.

[@GODisGreat7-h7r]

Getting rid of stock mufflers will get rid of rev hang mufflers give so much back pressure restricting power

[@Jdm_fl5]

The amount of curb rash on those wheels is wild….id be embarrassed to have my car reviewed that way

[@bradthornton6953]

If you tracked your car, you would understand why his wheels look like that. It happens sometimes when you’re driving at the vehicles limits.

[@RuiMeirelesPacheco]

@Zygrene, can you or the owner please clarify whether rev hang was disabled on the Ktuner? Seems really strange if it has! The car sounds great by the way! Classic Honda sound, despite the turbo. Love it.

[@gedcortes7452]

Maybe lightened flywheel to improve throttle response and reduce rev hang?

[@thosetwodudes]

Would a lightweight flywheel help the rev hang? Also in KTUNER there is a check box to reduce rev hang. Was that checked in the tune?

[@ValkenDnB]

Doesn’t seem like the rev hang was tuned out. I had a 2019 si with a heavier flywheel and you can speed shift that thing with the rev hang off.

[@tristrog9310]

Yeah that tuber definitely didn’t adjust the rev hang. Sounds just like mine haha. I’m solely waiting for the warranty to be up at 30k miles to get a ktuner

[@ValkenDnB]

@@tristrog9310 36k is when it ends

[@lelaush]

I love my 11th gen si even after coming off having the 10th gen si sadly it will never be a type R the look is where the buck stops for us lmao. We stand the money to really max out the performance of our car and we just break the entrance level of the type Rs door 🤷🏾‍♂️ and as for the rev hang I have never tried to turn mine off (the car only has a tune other then that it’s stock) but there is a option inside of Ktuner that “says” click to disables the rev hang 🤷🏾‍♂️🤷🏾‍♂️🤷🏾‍♂️🤷🏾‍♂️

[@APS_Inc]

My K20c2 makes a lot less power but I will say it doesn't have rev hang at all. I do wish it had rev matching though for brainless driving during rush hour.

[@Sergeant_GiO]

I did a full bolt-on on mine (PRL Flex fuel kit, Intercooler + pipes, intake, downpipe, frontpipe, Remark exhaust & FK8 retro clutch on e30 tune), but it wasn't enough for the money, so I sold it. Not worth it

[@geoffrichard5031]

I know of a 10th gen 1.5t on 20psi for 140,000kms with no problems fbo tho, iat's and watching knock some of ktuners flash tunes have better knock values then the stock tune

[@sigrholambda]

the rev hang is probably due to fuel efficiency it would be interesting to see what the mpg difference is with the tune

[@Prisonmike89]

Did they fix the blowing headgaskets?

[@johnmitchell2269]

Civic's are now the size of Accord's and Accord's are now the size of Legend's 😩 bad times

[@doctorferdinand1003]

The weight is the same though. These are lighter than 8th gen’s while having a longer wheel base and significantly more room. Not a bad thing at all.

[@TassieLorenzo]

Honda Jazz (Fit), Brio and even N-One (small enough? 😀 ) are still made. They are just not for North America. This is due to low profit margins, CAFE footprint rules (and not meeting US crash regulations in the case of the N-One), I guess. The same 1.5T in a Fit Si than a Civic Si would somehow need to get much better MPGs due to having a smaller CAFE footprint (wheelbase x track), but obviously that's not feasible to realise. So the CAFE footprint rule is super punitive against making small cars (especially small cars with "big" engines) -- hence why it is to Honda's CAFE advantage to give the Civic a bigger footprint, even if it still only has a 1.5T engine.

[@matthewpere1975]

The accord is not much bigger but has way more power. That is what I went with in the end. Test drove 11th gen si very nice car but had me wishing for more power.

[@邹凯文-l1t]

You can change how long the rav hang last by software. Year ago I was window shopping civic, and now I’m looking at wrx for winter.

[@WyFoster]

TSP Stage 1.5 tune, my rev hang is zero. Clutch in the RPM drops.

[@StylesBlender]

That sad the numbers these turbo 1.5s put up. My fbo 8th gen was 234/196 NA.

[@ADX420]

In anyone’s honest opinion how do you think the tsx hold up to these newer Hondas? I daily a 07 tsx and that k24 is just beautiful.

[@jonathanmota6028]

Honda should’ve kept the k series in those Si’s, the whole point of getting an Si was for the vtec joy

[@GOLIATHtheGREAT]

The Brembo Brake I take it is the Genesis Swap... How much better is braking with that kit....I've heard great and I've heard it messes up the Balance and is heavy and not much of an upgrade... VERY Curious

[@stevegonzales527]

Bro really spent all that money instead of just buying the type r and it would’ve been a better bang for the buck

[@jaybautista6673]

Yea i blew that too

[@punkassazn]

What about the rev hang in your Type S compared to the Si?

[@kedro5]

Do these have the same or similar L15 engine as the 10th gen Si? I heard somewhere that there isn't much you can do with those tuning-wise.

[@antonakis79ohyes]

Sounds great! At last!

[@PeterVwj]

Yeah you can disable the rev hang with ktuner

[@Phu-i9v]

Isn’t the rev hang is the consequence of rev match? Since this is not a performance car, seems like Honda did this intentionally.

[@garcimud]

Why nobody is talking about fixing the rev hang by just turning off not needed rev matching. It is simple as that. Turn off your rev matching and rev hang is gone.

[@ishe_kun]

what’s the 0-60 after all these mods??🙏🏼pls answer

[@KriticullCTRL]

Were you driving on the 18 or 330 highway (Big Bear)?

[@Notoriousfc3s]

I’m pretty sure the tsp and phearavle tunes disable the rev hang

[@pauls3758]

Needs an ls or coyote swap (i know that will not work) what's the point of tuning this car? No power needs a bigger engine

[@EthanSmith48]

Any idea how or if the owner aligned the car? there seems to be a lack of suspension bits to give the front more camber on stock suspension.

[@Fryn_Hayn]

I am confused, if he has Ktuner why did he not turn the rev hang off?

[@dvsAC]

light weight flywheel would do wonders im sure

[@Blackdawn80]

I had a 2020 SI for maybe 3 months before I traded it back to dealer at a loss. The rev hang was just unbearable and a 1.5 is just too small for a nearly 3,000 lbs car. Honda missed the mark on this SI, it should have been a detuned K20 but Honda knows that no one would buy a CTR. I personally hate the looks of the new Type R, it's a half-assed attempt at a hatchback.

[@kentonlinger2678]

Now do a review on one with fbo and bigger turbo

[@DanielMartinez-bz9wg]

If you change the flywheel with the clutch it should get rid of most of it

[@HUNCHO98_]

Besides Honda, what is a fun first car to learn how to drive a manual? I'm getting one soon!

[@tonychau1983]

Gr86 brz

[@HUNCHO98_]

@tonychau1983 thank you, I'll add this car to the list and do some research on it!

[@GT1Zero]

So is the rev hang due to the factory tune or the dual mass flywheel? Or both?

[@ramzH95]

Rev hang is there on stock; this guy did not tune it correctly or its a driver issue. My 22 SI has nowhere close to this, not a fair review.

[@Euphorica]

Rev hang has been an annoyance since the 8th gen. Sad its still so bad.

[@thesorzboyz]

You want Rev hang? Drive an 06' Si. I haven't had that car in years but it's still hanging at 8200.