2.5L Swapped Twin Scroll WRX STI Hits the Dyno!

[@mightycarmods]

Final 24 hours to get your autographed STI Poster, Once they are gone, they are gone for good! mightycarmods.com/products/limited-edition-gc8-poster-autographed

[@andy2906]

hEAd GaSkEt 😂 vape subbie or bong Nissan

[@toyota420xp]

I like modified cars for mechanics but if your not stay stock

[@carlmcgregor2707]

Hello.. Are you guys doing the Christmas Day special this year? I absolutely love them.

[@Real95neta]

Hey Marty have you guys ever thought about building a boosted V6 Accord dumping all the weight out and drag racing it till it blows up!! I feel like you guys need something to beat the ever loving crap out of. just a thought.

[@archaelusthorne5228]

Got mine delivered this week. The wife and I love your stuff so she surprised me with this poster for Crimbo. Thank you both, and all your crew and mates for everything you guys do. Love from UK

[@masterbeernuts9344]

Build DAVEO a car! We owe him.

[@mitchhifi9192]

Davo the datto

[@RWB1111]

Evo

[@woopimagpie]

That's got me wondering now, what does Dave drive? What's his vehicle of choice?

[@murry001]

a car FULL of wires

[@Kurisuvision]

@@woopimagpie iirc, he has an evo wagon

[@prgnify]

The VIBES were on point with Benny. Showing your work and sharing experience with someone who also knows what your doing and have a genuine interest in is one of the best feelings there is. And his response when you ask if he sees anything "ah you know what you're doing now you're just second guessing yourself" - what a mate.

[@TayWhiteside]

best part of the whole episode, i felt that at my core. Bravo lads!

[@wjoely]

Absolutely agree. I felt that too

[@roddydykes7053]

Benny is the biggest G of the whole MCM family. Which is a crazy talented group of folk

[@roscop.coaltrain9440]

Having Benny tell you you know what your doing, don’t second guess yourself is the highest compliment. Congratulations Martin!!!

[@andersjjensen]

Having been taught by Al, Miles, Benny, Scott and Dave for years... if they didn't know what they were doing by now they would be certifiably stupid :P

[@roddydykes7053]

@@andersjjensenI wonder if that goes for Moog haha I think he’s got intakes just about sorted by now 😉

[@mouaxiong8618]

M stig is still mad about Marty bolting the Cressidas drive shaft backwards.

[@ChristopherHallett]

They've done so many mods, rebuilds, and engine and drivetrain swaps by now I'd trust them to work on my car, and I'm a mechanic by trade.

[@Arganyn]

@@roddydykes7053 Moog is good at acting, the man forgot more knowledge than most people ever learned and he definitely could build a car by himself after all these years like Marty can dress up and engine bay now

[@Ogchampayne]

I love Benny , “you know what your doing you just second guess yourself” what a beauty

[@AmanJandu]

Definitely going to use that line with the boys at work 😂

[@joew7897]

I've been watching for years, and the content has always been awesome, but I'd like to point out how Marty, Moog, and all the regular "guests" are so quick to give props to each other. It is great to see. You're all legends.

[@myownsite]

Not any guest, Mechanical Stig was a staple 🙂

[@jjcarlos]

If you remember when they are doing things in a driveway with only one sponsor (the insurance company one) and it grew and guests coming in. Missed the blue turd and the wagon (forgot the nickname)

[@raspberrywatkins]

Dave, Scotty, Al, Moog, Marty are the MCM boys ….but to see Benny on the show you know it’s a premium Subaru build

[@someyoungguy6990]

More like family!

[@NatePhipps69]

That scene at 33:44 is absolutely beautiful!! If y'all made a poster of that shot, I'd buy one in a heartbeat!!!

[@PROofHAPPYWHEELS]

nah 30:30 is better

[@Villicy]

My grandma passed today. The fact that I can go watch a brand new MCM video and put my mind somewhere else is saving me right now. Thank you Marty and Moog! ❤

[@teeaugustineduong3734]

Condolences to you and yours.

[@cavalinorampante1]

Sorry for your loss😢

[@kevintang2597]

❤

[@evilryuss3]

My deepest condolences to you... godspeed and we as a community are here for you... 🙏🏽🙏🏽🙏🏽

[@ivanzu2069]

Sorry for your loss.

[@kalevassallo47]

Dave, Benny AND Scotty in the same video. What a treat!

[@Mr83rt]

We are being spoilt this week 🥰🥰🥰 I just wanted to say thank you for what you do not only on the tubes but for mental health. This time of year, as we are all aware of, can be a shit time of year for many different reasons so again thank you Marty and Moog and your small crew for allowing us to escape even if for a short moment in the day/week.

[@christopherlenahan3906]

-Scott is the BEST brand ambassador ever! He knows the system like another child and how-to tune safely like a guru should! I recommend to anyone I'm talking cars to, that is leaving factory ecu, Hal-tech because of Scott and your and Rob Dahm's videos. Even having not used it. It's just so well designed in hardware and software, and the Tech Support I've seen is amazing. -Always loved your videos, baught a 24 outback XT turbo and already making spreadsheets for mods. Both Subaru approved and for when my warranty ends :). It already squeals the tires a bit on a full throttle take-off into a turn, but needs a touch more! Nothing crazy planned, but another 50-100hp on full throttle will make summer as fun as winter (in Canada). AWD drifts into the next lane is so fun!

[@Mobile_Dom]

MCM: im not sure me: me either *benny shows up* me: oh fuck benny: you know what youre doing me: yeah you guys know what youre doing *sweating buckets*

[@mightycarmods]

Haha! This is accurate

[@Mobile_Dom]

@@mightycarmods clearly you guys know what youre doing at this point

[@jsleeio]

@@Mobile_Dom there's always more weird traps to encounter

[@zoidbergmerc]

Thanks for the shoutout, that pedal bracket will serve you well :)

[@frederickthorne2496]

don't get it right - get it running - DF is a legend

[@recoilrob324]

So happy to see a mid-range turbo build that will have good response on the street and be a blast to drive. The huge turbo's that don't come alive until well past 4000 can be fun when they're up and spooled but getting there a pain in street driving. The blue car is a really nice example of well engineered.

[@neovenom7187]

True, it reminds of 300+hp Fiesta ST I once drove. it gave nothing until it hit over 4000rpm. great for sprints on the straights, but when it came to mid range it actually had less power than my stock ECU Fiesta ST. Ah the good old times.

[@BIOHAZARDCURE]

@@neovenom7187 Garret turbo? My s280 comes on around 3200 and doesn't stop lol.

[@russelljimenez4715]

If they are so worried about midrange why don’t they drive a diesel golf?

[@recoilrob324]

@@russelljimenez4715 It's not a point of being 'worried'....it's about the car and what you plan to do with it. Run on a dyno to make big numbers so you can brag to all your friends? Sure...legit build but will be a dog trying to actually use the car on a twisty road. I prefer an engine that can be used with good response in cars and bikes. No power then too much power is a sure way to go slowly on a racetrack.

[@secretsquirrel9722]

There have been multiple research articles on intervooler sprayers. The short answer is to how to set it up. Is to actually spray after a sustained boost event. The cooler doesn't work as an instantaneous transferral of heat from the intake to the ambient air. It acts as a heat soak for the intake air (boost). Then has to shed that heat to the outside. Which is when it is optimal to use the sprayers. You can test it yourself by logging the intercooler metal temperature yourself. It will always peak, AFTER the power run! Hence, the term "heat soak".

[@Chousakan]

Wiring is a dark art and Dave is an absolute wizard. Good works lads. I can't wait to hear it knocking as the Nissan just keeps on 😅

[@18Bogeysgolfer]

"If oils not coming out the bottom, and the big end isn't trying to get out the bottom, then you're sweet" truer words were never spoken in regards to subie's! 😂

[@joseacuna3239]

I’ll suggest that you 3D print a couple of nozzle diverters to point the mist down to harvest all the benefits of the water spray

[@mightycarmods]

Yep that’s a great idea!

[@stevemartegani]

Certainly better than blinding yourself by spraying the windshield LOL

[@mikehotchkiss8975]

Having it spray out a bit is part of the display like nos spray at the tree

[@Jonathan_Doe_]

Port spray of fuel and nitrous set to kick in above certain boost/load/IAT’s would also cool the charge down nicely without hacking the body for a front mount 👀.

[@ArthurCole-mn7qy]

Was going to post something similar, to 3D print a 30 degree shim for behind the spray bar itself.

[@spadamsuby]

In 2019-2020 I put a dual avcs 207 in my 1994 wrx with its jdm dccd box. Haltech running it, water spray flex etc. had the vf49 and now have a dom1.5 twinscroll. Car is awesome. Well done on doing this to a nice 2 door. 🎉 it’s all about the response for a twisties car.

[@Trueno1600]

Here in North America, the sportiest Imprezas we got in that era were either the 2.5 RS (coupe) or 2.5 TS (sedan), which where kinda like a toned-down WRX; it had different bumpers, side skirts and spoiler, but way more conservative than a WRX. It also had the bigger engine, the 2.5, whereas the Impreza first came stock with a 1.8 and then a 2.2. I love this particular build of yours, because it is so reminescent of what "Sport Compact Car" magazine did in february of 1999 when they got a hold of one of the first 2.5 RS, and then went to custom-turbocharge it and make it look like a WRX coupe... Ahhh, the good ol' days!!!!

[@VanBourner]

The marks on the road in front of Haltech tell a story

[@tacoxdude]

Maybe it was because I've owned a GC8 and S13 in the past but seeing these together @33:44 gave me chills and brought a smile to my face. Great content guys!

[@smirkingrevenge6]

The irony that all Martys cars here are blue and Moogs white =P very much looking forward to the Christmas special gents!!

[@alexandremailloux8966]

I really like your tuning videos and more people should watch them. It shows that you don't need a stupid amount of power to have fun.

[@schroandtell]

Dave is the best - love this legend for helping you out!

[@chummy7294]

I could hear Scott talking about engine tuning for days.

[@ThatWhiteGLI]

22:50 this was cool seeing the tuner review the data and make changes

[@cbr954glen]

10:22 I remember when the first 2 door STI was delivered to our dealership. I got to do the pre-delivery on them. It was one of my favourite Subaru's way back then.

[@jama211]

Wonderful!

[@ThatOddGarage]

Not sure if I've posted this before, but I've got a sweet SV21 Camry I picked up for $200 in July. I am going to be swapping a 5SFE and new A140E trans into it, both reman, doing a suspension recondition and going to daily it. Just about to hit 300k miles, burns oil like no other, but has ZERO rust and minor panel damage. Might film it for "My Crap Car". Love the Subaru, much love from the US

[@TadhghR]

a mad bigger rear mount ice water tank so you could have mad longevity and extended consistency on the cooler induction spray. Great video! Thanks Marty & TF!

[@The_Absolute_Dog]

It's always a good time when Benny shows up. And a Freiburger reference, would love to see dave and finnegan with you guys again

[@andrewpitcher8568]

Love your work Marty, you guys have had a great influence on me over the past few years, and I started to do oil changes and even changed my brake pads. I'm excited today as l'm hoping to pick up my 2020 Subaru wrx. I wish you guys all the best for Xmas, and I can't wait to watch a lot more shows.

[@mightycarmods]

Good effort mate!!

[@lc4geoff]

Benny and Dave nerding out over the engine install is a joy to watch.

[@stevensiwinski]

The shot at the end with the STi rolling up behind the 180sx is :chefkiss:

[@nicky8866]

props to davo, you can tell hes over it but still helping out. legend

[@Ligerzeronz]

This is what sets other car KZbinrs apart. Dyno runs, with A LOT of explanations of what's happening and such.

[@jvf7762]

Just a conversation between two guys that have solved a ton of problems with these over the years on the different way they have approached solutions is kind of great. Good to see The Mechanical Stig

[@smartymotofoto]

Scotty is such a legend. So much experience and knowledge. Would love to have someone like that in control on the dunno.

[@chriskouvoutsakis536]

I used to have a GC8 that made 190kw @ the wheels, using a vf34. It didn't hit boost until 3500 rpm or so, making it feels sluggish down end so in my experience I think you made the right choices with this setup. Unfortunately I regretfully sold it years ago, one of my biggest regrets. You came to a meet at ichiban way back with super gramps. You've come a long way since then, keep it up.

[@TheT8or]

halfway through when you mentioned the sprayer and said you did it a little while back... I was like, "A LITTLE while?? If i got the reference, I feel like that was a decade ago". Then you played the clip. Congrats on another successful build ❤

[@nickgrech9634]

Love seeing Benny (Mechanical Stig) in videos.

[@n8tn808]

Thank you for all the Subaru videos for the holiday season! Can't wait for the Christmas special!!!

[@Alonsel3]

I know everyone hates on Subarus and there are some good reasons for that. The smiles on Marty's face this ep are testament that on a low budget, you get big bang for your buck.

[@Trueseeker-r8q]

You could buy another hood from a 2000 turbo spray it cut it to suit the bigger scoop and keep the original on the purity shelf in the shop

[@Byron_Thomas]

Love it Marty!!! I have spent the last few years on my 2.5RS (GM8) that looks identical to yours. Its running a 2.0L @ 275whp at 18psi with a VF34 at 5000ft elevation on 91 octane. They are so fun to drive!

[@jrbuch]

Blue two door STI with blue seats - chefs kiss!

[@TastierBackInThe80s]

This STI and the Gemini build, all the premium feels.

[@cutters74]

Can’t wait to see this on track, great content as always lads ❤️

[@Mud_Kip]

you guys need to official indict all the lads into MCM. They do so much for you guys

[@gemini3558]

Dam I love ❤️ this car !!! Killer job Marty and huge shoutout to Dave’s wiring masterpiece what a great friend !!! Tuning fork is a legend, man I could listen to him all day !!! 😜👍🇦🇺

[@swalox9112]

Agreed with the haltech basemaps. Insane how well the car drives with some basic tweaks and correct settings put in!

[@jaredanderson88]

Got It Rex in Melbourne sell a custom fabricated intercooler splitter for the larger intercooler. I also ran one of those High Octane air boxes on my 99 WRX back in 2010. Awesome to see they are still selling them.

[@MegaKrustyman]

So good. 10/10. If the water spray doesn't keep the temps under control at the track, you could try a water-air intercooler to avoid having to cut up the front bar.

[@russelljimenez4715]

If your intake temps are too high, you could try not using such a tiny turbo

[@geometric1227]

I'm not a big Subaru fan but that thing is super nice. Another clean build, you guys should be stoked with it! Well done.

[@LostinWales]

My turbo 2000 has headlight washers! Well it had them it now has intercooler spray 😉

[@jonahbones7901]

Scotty was spot on was working in a subaru dealership when the Sti was released. the big difference was our WRX was technically a turbo impreza because of fuel quality issues in Oz. Saab had the same problem with their turbo engines. the Sti was the first actual wrx, and they where a very competent all around package far ahead of anything else.

[@mrthatguy1977]

Love when Benny shows up check out Benny's custom work for great yarns

[@julesvreug]

The Hex spray looks great, I have 8 fogger nozels going around the edge of my intercooler on a high presure pump on my s40 (twinscroll) but didnt see any difference only around 2c drop. Going to try the Hex looks like a nice kit not badly priced too. Nice you got you got the STI going before christmass too. My Car is playing the banjo song, which one is going to leak next. Im not worried about the head gaskets more rods haha. Moog sounded sounded like the 180 owners back in the early 2000's then they cry when get choped :P

[@peterhess6039]

Love the car talk at the start with Benny

[@buddeh_bikes]

You guys once again proving you are at best at KZbin. Excellent hype building for the next challenge series!

[@DatKushLife]

We need another movie length build with a pick up from japan with Marty, Moog, Benny and AL. The best videos use have done i swear

[@salman3258]

RIP your headgaskets.. gone but never forgotten 😢🤣

[@mightycarmods]

All the cylinder pressure, all the time

[@xt6wagon]

Kinda wish subaru picked 2.4l for more room to support the hg.

[@reverberer]

Thanks

[@mightycarmods]

Thank you, appreciate the generosity.

[@reverberer]

@mightycarmods no worries, contribution to the new head gasket to replace the ones moog stole 😆

[@karlj1717]

Love you guys, my poster turned up today 😁 all the way from Australia to England in perfect condition thank you guys.

[@j_mars_cars]

Y'all are uploading faster than I can watch!

[@Ibetrolling1337]

I used the rear sprayer pump in my Gen3 GTB on the TMIC cause it still worked but it leaks between the bottle and the rear window. Just for heat soak in the traffic works a treat and its just triggered by using the rear spray on the stalk

[@mightycarmods]

I did the same back in 2006 on my gen2!

[@Ibetrolling1337]

Works a bloody treat and dirt cheap peace of mind mod

[@elkoutdoor567]

WOW, this came together quite well, Gents. Lots of fun and laughs with you too. The end had a bit of funny. Shout out to DAVEO!!!!!!!!

[@BrendanEvan]

I love these in depth dyno tuning videos

[@mackilla199]

Perfect street weapon, my 2006 wrx has a vf35 and comes on boost at 3000. Only makes 176kw at the wheels but you're always on boost which makes it a blast to drive. Love the build!

[@brokensmilephoto]

I remember back in the early 2000's a friend having a big HP bugeye STI. He did a front mount with a nitrous sprayer on the intercooler. Was insane and the nitrous would essentially freeze the air going into the manifolds.

[@Kenny.G-33]

Would have to be spraying ALOT of nitrous over the whole intercooler core to 'freeze' the air 😂😂 nice story

[@ericvaught2111]

Bruh y’all had me freaking out with the letter! So many car channels have had so many people leave just this year alone…

[@elliottb7009]

water cooled intercooler may help have consistently lower temps. maybe you could do a myth busters episode on one of the cars. but i love this build. it looks so good. great work as usual.

[@PrinceKC22]

“You know what you’re doing, bro. You just second guess yourself.” What a reassuring statement coming from your bro.

[@sifuseafood]

Bakemono makes high riser GC scoops, if Marty wanted to open the hoodcoops smidge. It retains OEM form. It's a nice OEM+ piece! So, nice to finally see this back! I just finished my GM8 build too. Highly recommend a BCP X500R for a stock location turbo upgrade. These things spool up sooo quickly and they're capable of great power.

[@mightycarmods]

Is it twin scroll? Keen to stay that path

[@ernestofuentes2441]

​@mightycarmods If you're actually considering using a bigger turbo how about checking out Socalporting instead. I've met and had him rebuild one of my turbos and his work is top notch quality, he's a stand up guy and what he can do with vf turbos is amazing. Not to mention the guy is an actual subaru enthusiast

[@someyoungguy6990]

@@mightycarmods I was thinking a hi-flow port job but just not sure if it would effect the down low boost?

[@BlackFlag94]

I love this! I know you guys aren't massive track nuts but I would LOVE to see this car shipped to the Nurburgring for a Misha appraisal 🤩

[@Aaronz2.5RS]

I love this so much! As the owner of a USDM RS that's 205 swapped, making 275/268 HP/TQ (on a slow VF22) I know I've done well! Now I just need the 6MT/R180 combo so i can turn it up!

[@volksbugly]

I have a 2.1 L and I run about the same boost, just a little bit more and I love it! Merry Christmas and Happy Boost season!

[@deano24v]

Cracking vid this,really enjoyed watching the thought and detail going into the mapping.

[@neonnerd1364]

I can't wait to see a track day with this. I have an obsession with Subarus even though I've never owned a turbo one. I had a 99 legacy 2.5gt 5 speed and I loved it. I slapped an uel header on it and ripped the cat off and put a good muffler on it. It sounded so good. Now I'm driving an 08 impreza 2.5i hatchback that's also 5 speed. It needed an exhaust so I put a 3 inch catback from a wrx on it. I'm gonna be putting an uel header on it as well so it sounds good.

[@armouredthug5154]

the iconic 555 wrx started it all for alot of us - it did for me, i went from WRC to Cars !

[@AndrewLighten]

9:48 Clear evidence of tuning on the road outside Haltech.

[@PHUSII]

Nissan VS Subaru, the age old duel! Can't say the SR being that reliable either :D

[@lukeyboyjj2578]

What a great episode absolutely loved this one thank you guys!

[@christopherlenahan3906]

Bit of exhaust wrap on the down and dump will help the cat work better and keep exhaust flow up. Also cabin temps down.

[@jackgibb16]

I made a water spray system myself on my old forged WRX using fish tank piping a cheap pump and windscreen washer jets.

[@reijin64]

I ran a big turbo twinscroll with 270ish kw on 98, it was so punchy in the midrange and responsive too Loved the sound up high too, is proper. They love a mild cam

[@mdigs2364]

So, so good. Loved every minute of it.

[@fermillo65]

Daveo's been essential this year.

[@Hessellhoff]

Thanks boys Given me some inspiration to get my 2 door back on the road🙌❤

[@westybeastfella]

Something to watch at work. Beauty.

[@rambow70]

Impressive gains from the sprayer! I 100% agree to not cut up the car for a FMIC. Very tasteful and effective

[@rodneyberg5445]

Love the ending, can not wait to see who comes out on top

[@rsbharley4766]

Congratulations to you and your mates Martin. Outstanding job, long live the two door. Cheers

[@06wrxRAR]

beautiful setup. twin scroll 2.5L. if the cams springs and valves, cam gears are upgraded to rev up to 8-9k rpm then you will know the true twin scroll potential on a 2.5L. the other VF turbos that comes stock for ej207 spec c can push to 380hp. a 2.5L with higher revving ability should also be able to hit 400 on a Hi flow spec vf48 turbo. i plan making my 2006 wrx drive like a wrx-ra by upgrading to 8k rpm, oem vf39/48, twinscroll header fabbed to single scroll pipe. and dccd 5 speed. the ej255 has higher compression that should give crazy amounts of low end torque. the td04 alone makes a lot of torque. the sti tmic and big tmic perform nearly identical as NASIOC forum says. the 2010+ sti tmics are biggest they can get.

[@camryt]

Yeah, after having NA cars for so long, I’m all about response. I rarely liked turbo engines. My '24 GR Yaris has spoilt me though, this thing has so much punch down low and the response is great with minimal lag considering the amount of boost.

[@davidt3196]

4:08 Hold up, wait a minute! Did Benny just say "that WAS a sick car"? I really hope that doesn't mean it's gone.

[@camryt]

I hope he just meant Levoeg with the EJ25 and STi driveline, not the entire car. Right? Riiiiiiight? 🥺

[@davidt3196]

@@camryt Considering it was built to replace SuperGramps, I hope you're right.

[@mouaxiong8618]

Levorg was supergramps replacement which was Marty's daily driver. The levorg is not going anywhere anytime soon unless it got crushed by another driver.

[@deathtozemotherland]

Levorg was sold a few months back hence bennys comment. Was up for sale in the mcm shop at the time along with a couple other cars

[@Ward1706]

Levorg’s gone, as is the built flat 6.

[@Chris-ej7tp]

Love the channel, cars and builds guys. Im a car guys mainly muscle but love imports as well. I would really really love to see MCM's take on a v8 street/track build as you guys have such a unique perspective on how street cars should be built

[@dazherbert2782]

Cool results, and the sprayer ....👍👍👍