MPG, Dyno* and More - Project Underdog Update after 270km of driving

[@d4a]

Become a Tuning Pro: hpcdmy.co/dr4a Support the channel by shopping through this link: amzn.to/3RIqU0u Patreon: www.patreon.com/d4a

[@claudioagustinalonso9781]

A few minutes ago I was preparing to go to bed then this video notification came out... So I suppose sleep time can wait

[@eugeneb4638]

Turn off notifications. This video and others will be here when you wake up.

[@michaelblacktree]

My Jetta TDI used to get crazy-high intake air temperature. Stop-n-go driving in Florida in the summer will do that. I hooked up a scanguage, and could see the intercooler heat-soaking. Sometimes the intake air temperature would reach 80*C! And the engine would get unhappy. So I added an electric fan to the intercooler, with a temperature switch. I set the switch to activate at 50*C. That fixed the problem. The intercooler doesn't heat-soak anymore. And the engine is happy.

[@mry82]

Where you been!?

[@michaelblacktree]

Had to take a break from youtube. Working 2 jobs doesn't leave much free time.

[@mry82]

I feel you... I work one teaching job, but my two young daughters make sure I feel doubly employed, haha. Glad you are alright and look forward to when/if you upload again! Not sure where you are in FL, but I hope the storm spared you! Cheers!@@michaelblacktree

[@michaelblacktree]

Thanks for the kind words. Thankfully, we only got a glancing blow from Idalia. I have some video that's been sitting on the hard drive for a month now. But I haven't had time to do the editing.

[@josephkelly4893]

The sense of pride you must have driving that car is well deserved. To build something so special with your own brain and hands is not something that many can achieve. Well done bro

[@saityavuz76]

I thought the exact same thing, I feel happy vicariously.

[@PaddyOutback]

That is some amount of power in a car that’s the size of my shoe! You’ve done an incredible job with it so far.

[@Conservator.]

It must be a magnificent feeling being able to finally drive your car this way! Congratulations! 👏 Thank you for letting us being part of your journey, such a joy to watch! 🙏

[@Legotruck82]

Water to air may suit your application in a hot climate for the intercooler, unless you insist on staying air to air and roof mounting it.

[@wobblysauce]

Little ductwork, to aid the flow.

[@luisro7782]

yes, a scoop or a fan might work to

[@dielaughing73]

@@luisro7782 what, are you a man or a mouse? He said we're moving it to the roof!

[@luisro7782]

@@dielaughing73 🤣🤣

[@tturi2]

​@@dielaughing73or best of both, F1 intake!

[@johnlewis8156]

Real talk your home is beautiful! Everytime you go through the tunnel and then come out with the mtns in the back ground is just beautiful!

[@PeterBaumgart1a]

Fun fact: 15.3 is the same number whether you talking mpg or liters/100km. (Same as -40 degrees for C vs. F.)😊 If l/100km goes to half, mpg doubles... 5.1l/100km is 46 mpg, etc.

[@iansmith6728]

Euro gal or US gal?

[@sapte62]

There is no such thing as euro gallon 😂

[@rodolfoandrade7453]

"There is, however, an "uk gallon" @@sapte62

[@iansmith6728]

@@sapte62 Imperial gallon then, smartarse.

[@GERntleMAN]

​@@iansmith6728There is only UK and US gallon

[@btcreations1246]

Am addicted to this channel, love from kenya, east Africa, now I want to turbo my Toyota 4AFE

[@supernova3872]

Uko wapi kenya ? (Where in kenya bro?)

[@OnkelPHMagee]

I don't care if the update is erratic-you're awesome.

[@jamesmedina2062]

😍😍😍😍👍

[@winstonsmith63]

🎉 Love seeing these updates! Living the dream man! I found your channel a couple years ago and have learned SO much from your videos, so cool to see how far this project has come! It's so clear in your speech how great this accomplishment feels for you, and as a viewer it's so cool to see that. You're an inspiration, congrats! 🎉

[@d4a]

Thank you so much!

[@negativeindustrial]

That is good news, sir! Glad to hear she’s holding together. She sounds great, too! I get about 15mpg in my MKII MR2 Turbo, as well.

[@jannikhellerup]

coming from a place in the world where tuning and stuff is illegal I love seeing this kind of stuff. Especially this channel since it help me learn and understand so much more than I did before. Watching you making this old car "yours" is amazing

[@MultiMustek]

Sounds like germany?

[@lynnhooley7608]

Sounds like California?

[@chillycheeese]

​@@MultiMustekin Germany you can do stuff like that.

[@Weaseltube]

Commenter is from Denmark

[@actionjksn]

I would hate to live under conditions like that without personal freedom. I own my vehicle I will do whatever I want to it.

[@singular9]

What a nice sound it makes :) Sometimes listening to you makes me think I am pushing my K20 too far. 24 PSI of boost and IAT runs about 45-50 C and I felt "that is too hot". Hearing 60-70C I am feeling great now.

[@abdallahturk6113]

And what about the mpg?

[@JavierPix]

I follow your channel, one of my very favorite and I hadn’t seen this video until now. Just fantastic, loved your commitment and enjoyment of your work and your car. Bravo!

[@PracticalRecycling101]

Yay for project Underdog. We'll done and thanks for the update.

[@Acidalley]

Happy to see your build and satisfaction it brings to your face

[@FreshSav]

Now, for some better tires! You were barely turning and I heard them squealing! Nicely done. Love seeing progress and testing on the Underdog

[@d4a]

I'd have to disagree on the "barely turning" 😁

[@FreshSav]

@@d4aOh even better then, haha! 😆 Stay safe brother

[@danielferraro59]

so glad to hear it going in right direction 💪🏻💪🏻 i’ve also after 4 years just finished a full race spec fully forged 944 turbo engine build with many mods stand alone and most important a lorry diesel holset hx35 twinscroll and turbo back full exhaust system ,.. all done myself in my single tight garage ,.. and i’m also like you feel beginning to love it …. i had major prob with my turbo drain also as it drains into the oil in the sump and not above oil level on these and on gear change i was getting oil puff of smoke where the vacume scavenging disappeared as i removed the old afm system ect ( long story) have fixed this now through hard work and many many trial and errors in regulating amount of oil going to the turbo feed and midyfying my AOS system to breath out the crank preasure look forward to the next one 👍🏻👍🏻 all the best Daniel

[@lozl]

Awesome work. It's so good to see your enthusiasm and see you enjoy the car so much. Looking forward to the next installment. Oh yeah! And that was some very impressive driving round those sweeping bends!

[@spazx8026]

please don’t stop this series. it’s so much more important than you think

[@rustydomino694]

Extremely similiar issues to my build as well 🤣 love your videos they helped me learn about and build my turbo KA24DE

[@johnmcdonnell81]

Great stuff again. Having similar problems with IAT's with 13psi. Should have them resolved soon. 'Cool' is my new mantra! Keep up the brilliant vids 👍

[@radodanchev8600]

Thank you very much for all the effort to fillm everything and the buil and even in between. I'm following you from a few years and it is a lot of fun and I learned so meningitis the proper way. Thenk you❤

[@zerodrift1]

Great to see you enjoy the car! Bit of finesse work to go from the sounds of things, but keep at it! Air to water intercooler gets my vote for a solution, as I've gone this route on my AW11 project. Pretty sure you've seen that on my instagram or youtube 'channel'. A fan on the intercooler in the interim would help. Getting the air temp sensor mounted up stream in the airflow will also help. Another oddball solution that'd help is a phenolic spacer on the intake manifold. That would help keep excess heat from the head from migrating up into the intake manifold.

[@Achillessoul]

Amazing video! I can't wait to see how well u complete the build and fine tune it!

[@LassoKid7777]

I've been watching this guy for ages ,finally it's driving that little MR2 with 1 bar nice brother you stuck to your guns and finished the project and sounds like your loving the #boost life , I'm boosted too can't live without it my 135 has two 1 bar boosted turborinos double the smile, gl

[@jozsefizsak]

That's really thrilling. I'm glad you're happy.

[@fraymond3]

Excellent work sir! It's been such a fun journey...

[@herressen1271]

next thing on the list: some fiberglas bodypannels to deal with the missing airflow into the enginebay

[@802Garage]

This is so cool man. I need to work on my MR2 so bad. Hope to see this on a dyno someday. It still sounds so awesome though and seems like a blast!

[@mountainjeff]

👍👍👍👍👍 Sweet. Guess you could talk to a few guys in Zandvoort this morning about snap oversteer. Shall be interesting to see how you address air intake temp. Thinking of modern WSC cars with those monster roof scoops !!! Thanks for all your content.

[@nicksilvestri3645]

Love your videos!

[@alphamegaman8847]

Nice!👍👏 Get an Alignment, just so it's right!🙏 I have the same problem with my right foot in my 1995 Cadillac Seville STS with the 300 Hp Northstar V8. When you get the Variable Valve Timing coming on in 1st or 2nd around 3500-4000 rpm, the sound is Wonderful, and a little addictive!😁🥰 If not for a crooked fabricator who disappeared with my payment and others payments, I would have had a Northstar V8 in my 1985 Pontiac Fiero!🤬 Your car reminds me a bit of my friends Northstar Fiero! What a Rush!!😁 Beautiful area you are driving in! Thanks for sharing!👍 Mike in San Diego.🌞🎸🚀🖖

[@williamebrahim2612]

Wow car sounds great! I would be so scared to drive it on that road like that you were ripping it! great build and drive safe brotha

[@imakevidsable]

Keep it up coming love these videos

[@Jeyden28]

I’d recommend doing a video about Car Clutches vs. Torque Converters. It should clear some things up for some of us

[@bat__bat]

Time to upgrade to water 2 air intercooling. Youve got power still left on the table. For the intercooler coolant heat xchanger, you can try mounting it in a box at 45 degrees and running a duct in and out. Kinda like an oem air filter, but put your radiator in the box instead of an air filter. Try to get ram air to feed the box through ducting. Use a duct fan like a 3 inch 12v bilge blower in the exhaust side to pull air through the radiator in absense of ram air. Great project and a unique car compared to the meta.

[@mastercricket7626]

Awesome bro glad to see and hear it's doing good , much love n respect bro keep I rad and stay safe n build on ... p8z brotha and keep having fun cuz u right it's addicting and imo it never stops , I'm in a big turbo forged miata so I'm right there with ya broski ... l8z

[@Fk8td]

Cars now are crazy cause now I build late model civic type R and I get 24-26 mpg out of a 600whp car. I saw your afr. 11.0 is a bit rich. You would actually be losing power when running that rich. An 11.5 would still be very safe and could make more power. Also adding more fuel doesn’t equal more ignition timing as that’s a myth. Only when your running excessively lean.

[@celiturbo]

11.0 is way more than a bit rich. Its not a big cam or high compression engine, 1bar boost should still be around 12.8-13.5 even leaner would still be safe just off the power curve, no reason to be dumping fuel for cooling at that pressure unless all you can get is like 87oct sams club gas forcing timing out of it. Those 4a/7a engines are also happy to cruise at 15-16:1 if you put enough low load timing in, easy 40mpg if your following traffic laws. early 90's lean burn was like this till the epa came down on nox emissions, now everything since 96/97 runs way rich at cruise loads. I really don't gather that dude at all comprehends that if its rich timing has to come out, lean it will will need to be advanced, or the relation of timing to egt & turbo spool.

[@ricvis44]

You my friend would have no trouble getting around here in Louisville Kentucky. (Home of the Kentucky Derby). We speak the same language! HORSEPOWER AND TORQUE! I enjoy your vids!

[@yorkchris10]

I'm glad I got to test drive one. I was interested in the twin-turbo variant in the showroom, but the salesman went with me for a ride in this generation. I preferred the handling of my MGB and the price was paid for.

[@johnnyblue4799]

There's something that I don't understand. At 3:29 I see your target AFR is 11.2 and the actual 10.96. Imo, that's way too rich. That might also explain hesitations on acceleration at lower rpm when hot (other that the exhaust leak), because you have even less air. You need to get that car on the dyno, for a proper tune-up. A good AFR at that throttle opening should be around 13 afaik.

[@d4a]

I put almost in any boost 11 everywhere before I had any insight into knock to be safe.

[@johnnyblue4799]

@@d4a I guess knock sensor(s) are the next improvement if your ECU supports it?!

[@mdh00000]

not a good strategy knock is avoided with ignition mapping not extra fuel which is just making damage to piston rings BTW when do you plan to do first leak down test or measure blow by?@@d4a

[@celiturbo]

@@d4a More fuel will usually make it more likely to knock. You can run a lot more timing lean than you can rich. 1bar of boost is nothing on pump gas, should still be 12.8-13.5:1. No charge cooling is a problem, cant be doing that over 0.5bar on gas.

[@d4a]

Hey man, I don't mind the spam but don't spread misinformation please 👍

[@vladdutz20]

Those seats are lovely :))

[@chikogota]

having a 3s fe on some of my engines, watching the progress in your project makes me wanna turbo it, use the engine while was in the car and it was awful slow and consume much more than a celica turbo so glad to see you this happy with your build, only thing related to it, was when you drive, notice that you put your elbow on the door while pull, it is not the best of the ideas since part of your back losses feel while you support the door, on the same limit that you were talking about pushing the car and its limits take care and hope see more updates

[@idood9279]

Whoa man!!! Easy, do not hurt yourself, please! We all need you.

[@beaches2mountains230]

I ACTUALLY FELL IN LOVE WITH IMPORTS AT 14YRS OLD AFTER MY REALLY COOL NEIGHBOR LET ME DRIVE HIS WIFES 89 TOYOTA MR2. IT WAS THE SUPERCHARGED MODEL BUT IT WAS AN AUTOMATIC. BUT WE TOOK IT THROUGH THE TWISTY BACK ROADS WERE I USED TO LIVE AND I WAS OFFICALLY CONVERTED TO AN OFFICIALLY ALL CAR LOVING ENTHUSIAST. LOVE THE MR2'S AND WISH I HAD ONE EVEN 20+ YRS LATER !!

[@25aspooner]

Good morning!

[@stefan-alinspeteanu9572]

As a Romanian, i sincerely did and didn’t expect to see the “5+1 Gratis” badge written on the gas pump

[@vladdutz20]

Some serbian language words sound the same as ours

[@padders1068]

Great work!

[@JazzbLu]

What a cool build! That is impressive fuel economy for 1 bar of boost and power! I know you know this, but the most important factor of handling is the tires.

[@jakefunny1]

Project Underdog is awesome. You should look into a drip tank for the turbo, it helped me with low mounted turbos.

[@actionjksn]

Is this an MR2? Maybe you could make a sort of hood scoop with an electric fan or two in order to get the intercooler temps down?

[@Alex_Fire777]

Wow! Car sounds great!!!

[@JustinBone]

I have an AWD car that’s a bit front heavy (60/40 weight split) and of course understeers. I’ve done a larger rear swaybar, some coilovers, and adjusted tire pressures a bit. This helps it feel very neutral. I’m thinking my next steps are to add a rear LSD, and a controller to lock the AWD system engaged. It’s 50/50 power split front and rear when locked, and I’m hoping adding the LSD will do similar as it has for you. Let me control the rear not just by lifting the throttle as I can now, but by pressing it too, and making very safe, controlled, predictable rear end step out. Good luck sorting out the rest of the build! Perhaps more focused ducting for your intercooler, and some exhaust and turbine heat shielding, can help your IAT’s some.

[@jdmimportlogistics]

Audi Quattro?

[@JustinBone]

@@jdmimportlogisticsTT RS 6MT

[@jdmimportlogistics]

Cool did you see the Misha battle btw the Subaru he was driving and an A4B5 on the Nurburgring last week?

[@jdmimportlogistics]

@@JustinBone What LSD would you use for this-Quaife?

[@JustinBone]

@@jdmimportlogisticsI did not see that; it would use a Wavetrac if I put one on.

[@discontinuuity]

Glad to see (and hear) it running so well! I think that a water/methanol injection system would help it run a little cooler and maybe help the efficiency.

[@gothicpagan.666]

Simple ducting from in front of the drivers side rear wheel, and making sure positive pressure from the engine bay can exit freely, the standard mr2 rear spoiler is too small to create any real negative pressure behind it.

[@paulmihailici9024]

hey man i love ur videos amazing stuff keep it up was wondering if you could do a video explaining rear mounted tubro how it works pros and cons, and different variations like intercooler or no intercooler and how it would affect lag. thank you

[@dragonsoldier187]

Hey, could you do a series like Iconic Engines but for diesel engines - Like VW's 1.9tdi, Mercedes's OM606, Volvos D5? It would be great to hear your perspective on them and their tuning potential because there aren't a lot of videos explaining diesel tuning but more of what it's like to do it. That is if you want to, of course. Your videos are great and have helped me a lot in learning about engines and cars in general!

[@TurboHappyCar]

It (still) runs! 🎉🎉🎉

[@AlexTrull]

Your IAT sensor appears to be in the intake plenum. Big nono as temperature is affected by density and when you have the throttle shut it can register different temperatures due to pressure drop. Put it inline just before the throttle body for better results.

[@lewiswestfall2687]

Thanks D4A

[@geemy9675]

almost got a perfect 15.3mpg = 15.3l/100km 😂

[@andrewahern3730]

TIL 15.3 is the -40° of fuel economy

[@chrischarles9218]

Well done!

[@LukasW74]

Good work... You now have a relly cool car.

[@youtubeviewer2919]

Install AEM water methanol injection kit, I’m sure it will definitely help your intake temp. Also get some smoke leak boost tester, it would make your life so much easier to find leaks everywhere (radiator system, vacuum lines, boost pipes)

[@claudiosantana3320]

feel the summer

[@iq5992]

i had the same jerking problem when revving the car from idle when its hot. either VE table in that area is not tuned properly or acceleration enrichment is too brutal (i was using tunerstudio with an arduino ecu term might be different for yours)

[@josephbuccola1742]

Hey man I love your content and have been following your build since I've gotten my aw11. Just curious what your cars weigh is around with the turbo setup? Thanks!

[@cetGT3]

That jerk you explain, i use to get that on my Punto GT turbo it turned out to be the butterfly getting stuck and suddenly opening as the tension grew on the cable, could this be same for you.

[@d4a]

Very plausible! Thank you for the tip

[@alexkupfer9171]

Really nice, what you have achieved! As I am form Düsseldorf/Germany and new to this channel, in which citiy are you located? These roads look like real fun to drive!

[@glenn9k]

I have an SW20 Turbo with some of the same issues, haha. Intake temps are a bummer for sure. About your power level and turbo size though; Maybe consider going to something like a TD04HL-19T#7. That thing would spool up and give your full torque much, much earlier (=wider powerband, as you know of course) ~300bhp.

[@hotchihuahua1546]

In my youth I was intoxicated by the power of an automobile ! Little did I imagine , back in the 60’s , we would have street cars that have the performance of a Super Stock car , yet sound like a sewing machine while doing it . Today at 72 , I find a car with 200 HP to be more that adequate , while still getting decent fuel mileage and range with a gas engine ! I think the range on electric cars could be greatly increased if they reduce the amount of power they generate !

[@GERntleMAN]

The city reminds me of Greece. Can't say if it looks more like Athena or Thessaloniki, but Athena is more compact. Hm. In the later part of the video or reminds me of Italy or Montenegro. Anyway lovely landscape!

[@celiturbo]

15mpg is horrid millage, no excuses for what it is, that tune plain sucks. On a modern ecu and not needing to meet the emissions requirements all the factory cars had to there is no excuse to be getting worse mileage than a modded with piggyback mess late 80's factory turbo car. Well there is the "I'm too stupid to properly tune it and i don't care" excuse but none that would allow pretending that 15 is pretty good.... 88 supra, 600cc injectors, t60, speeduino, getting it down to 15mpg might be possible city driving pulling 0-60 in a 30mph zone stop sign to stop sign but in general having way too much fun with the car still comes up 22-25. 30-33 just hwy cruise. 15 on a tiny engine in a tiny car on a modern ecu is complete trash, like if its 9:1cr and on e85 ok... Always with this channel, no experience and talking like the know all be all.

[@someperson7]

Careful finding out handling limits cliffside. Midengine cars loose their grip all at once

[@ChrisB200SX]

It's about time I say I have enjoyed many of your videos while trying to ensure I have a good understanding of my own projects, pretty sure I may have learned something along the way too. I also think the little 4AGE is great and really appreciate your project. (4AGE head/inlet development seemed to be in total parallel with CA18DET with various butterflies/pipework from 1985-1989, 12 inlet runners, then 8, then finally 4) What are your current spec and plans, the project underdog videos span a long time and I don't want to have to watch them all in order to figure it out :) Are you still testing the cheap GT28 for results before swapping to Garrett (GTX gen2?) turbo to compare? The JK Fab video you referenced in your Maxpeeding GT28 video is, I think, one of our UK 200SX owners who (re)builds turbos. I'm considering changing my old-tech GT2871R (0.64, "52-trim") on my Nissan CA18DET engine for a GTX2860 gen2 or G25-550 and maybe going back to the standard exhaust manifold (OK for this power), all for better spool and more torque lower down as I'm limited by standard rods (350bhp and 300+ft-lbs at 4400-6100rpm) but I can probably push the rods and turbo to 380bhp. I'm rebuilding two spare cylinder heads with larger exhaust valves and gasflowing these myself, the inlet manifold, plenum and TB, so maybe it would be opportune to upgrade the rods. The engine was fully rebuilt with forged pistons and metal head gasket 15 years ago but has not been used much for 10 years. A full head build, new gaskets, new turbo and remap would be quite an investment! Would like to know your thoughts. I'm not sure I really need to change the head or turbo, I enjoy the projects... but not the expense. And, to be honest, it is pretty savage as it is in a 1150kg car with aftermarket long/close gear ratios, I think it would be better to have a smoother, earlier and less violent surge of torque! (150->300ft-lbs from 3500->4400rpm) although I must admit this surge is very addictive and could be faster but less enjoyable with better torque earlier? I have considered longer inlet runners and different cams. Maybe I should save the better engine build project for a kit car in the future, a Fisher Fury with up to 360bhp at different boost settings :D One last Question. What compression ratio are you using now the 4AGE is built, just curious as to how high you dared to go? I'm no expert, but I wonder whether your dump valve is leaking as I'm hearing a lot of "whoosh" as the boost builds even before you close the throttle, might be worth investigating. Bailey DV30 recirculating is great with 22psi and aluminium pipes :D

[@erwinschmied]

maybe a scoop to funnel air into the bonnet, front engine is easier to blow air over the intercooler but harder on a mid engine

[@aboyandhisdog]

15.4 mpg's...is that Imp. gallons or US gallons? Thanks!

[@d4a]

I have no idea, I just used an online converter to turn liters per 100km into mpg. I used the first one from the results. I didn't know there were different kinds of gallons.

[@avalaugh1980]

Has been great watching the progress videos. I haven’t noticed you mention what oil feed size hike your running ? Is 3mm suitable for the turbo ! Also is 1bar boost the stock spring that comes with it ? I’ve got 1 also for my turbo build but the one with the billet turbine wheels. Keep up the good work 👍

[@Manuqtix.Manuqtix]

Ah!! I must come to Sarajevo and open up a dyno shop!!

[@dielaughing73]

How does the LSD solve understeer by "pushing" the car? If the front tyres are overwhelmed pushing shouldn't help (since understeer is also known as "push").

[@arya_amg]

It's a RWD of course it will oversteer with more push

[@NitroNuggetTV]

Solve is the wrong word for it. An LSD can cause both, like you mention. But generally, an LSD will just provoke the rear axle to step out under heavy power, overriding the understeer. Its a bit of a sledge hammer solution to the problem tbh, and can make for some scary driving characteristics, ie snap oversteer. Anti Roll Bar's, driving style and suspension geometry/setup would be the correct way to fix the understeer. edit; its the same principle as trying to drift a car with an open diff vs welded diff. the open diff understeers, while the welded steps out.

[@dielaughing73]

@@arya_amg yeah I wouldn't exactly describe oversteer as a 'solution' to understeer. The other commenter explained it though.

[@dielaughing73]

@@NitroNuggetTV fair enough, I guess the ideal corner exit is a controlled four-wheel drift and this is one way to achieve that. My Miata has a torsen diff like this car so perhaps I'm already experiencing what he is. The car does tend to push but I'm becoming aware I'm probably causing that in large part. Driver mod, geo, springs and shocks are a work in progress (sways already installed and set nice and stiff, but still subject to further adjustment).

[@stenyak]

These Quaife TBDs (torque biasing diffs) create a natural sort of torque-vectoring effect under throttle: the outside wheel is sent a greater torque than the inner wheel. Whereas an open diff would send an equal 50-50 split of torque. So it's this torque bias is what "pushes" the car to rotate into the corner, to the point you often need to unwind the steering wheel a bit to compensate for the torque vectoring effect if you go full throttle mid corner with plenty of grip left.

[@filipbrecelj669]

when will we see another iconic engine video?

[@fuse8052]

15mpg sounds kinda low. Is that all city driving ?My turbo saturn wagon runnin on mega squirt gets 25highway and did 212whp (8psi). My ion redline makes 340whp and gets 27mpg highway (17psi).

[@jdmimportlogistics]

Wow!!! Just discovered your MR2 series and couldn't have found it at a better time. Just scored an 87' MR2 AW11 N/A auto here in the U.S. that I've seen parked for years for a couple hundred buks. All the practical knowledge you're passing on is amazing! Instantly subscribed! Btw also happen to own an 94' Audi UrS4 that I want to upgrade to an Apikol intercooler. Will the OEM one be suitable for an MR2 turbo build? What OEM turbos do you recommend that could be potentially harvested from a JDM- i.e. FD13B or 4g63?

[@lorenzobyfield7988]

will there be any other update on the project been waiting

[@4BillC]

Get a water methanol injection. I have 1 on my car and it is absolutely amazing! Even when it's stupid hot out, under boost, IAT is well below ambient!

[@stevencarter385]

I have a Mk1 with a 20 valve 4AGE and I've never gotten less than 30 MPG. Lots less HP than yours though. Still more fun than the stock 16 valve.

[@BBox-135]

Highway mpg would you nbr aroumd 26mpg? Normally they get about 30-40mpg but 40 would be driving a place without hills/mountain to drive i'd assume. 30-33 would be my guess without turbo, so that makes me as if 26mpg would be highway and 20 city if you do push it everywhere. With rhe issues fix i would think you get another 1 or 2 while driving in Mexico.

[@radodanchev8600]

I'm really interested in the aero and how u will solve the issue with temp

[@ZephyrCorsa]

Are those Automation screenshots in the thumbnail? 🙈

[@mihailpetrovici5044]

When hot you just need to add some fuel with the iat correction, at least that's what I saw in my case. Low load like 3-5% more, high load, in boost 3-5% less fuel at hot temperature

[@zachogdahl210]

Talk to paul woods and look into getting a hapers hatch. You could route/duct the air from the scoop into your intercooler.

[@murcotguy7804]

If I want to change the throttle body to ITBS what do I need

[@tturi2]

My biggest issue with my engine is my oil drain and water lines, i can get a 4an fitting that clamps over coolant pipes with a hole drilled (not keen lol)

[@Coffeemancer]

is there some practical reason for driving as loud as possible around other people and through neighborhoods?

[@blackshaderhunter990]

Why the ''pshhhh'' of the dumpvalve is that loud even if you are not at high RPM ?

[@nuttyDesignAndFab]

water intercooler is basically mandatory for mid engined cars. I melted plastics in the engine bay on my NA 3rd gen, soooo....

[@d4a]

Porsche disagrees

[@celiturbo]

@@d4a Reality disagrees with anything air to air that will encounter a stop light or traffic.

[@d4a]

Must be an alternate reality 🤔

[@celiturbo]

@@d4a They do nothing other than heat soak till they have air flow. Why pretend otherwise? Just because porsche did it does not mean it at all properly managed inlet temps after sitting at a stop for a minute. Everyone that has actually built up a aw11 or sw20 knows its just a exercise in stupidity to even bother without some sort of rally scoop and a 50amp fan running your battery dead at idle. Lot of people talk or make assumptions, very few monitor IAT to know. I know 1 bar boost at 50-55c is around 20% more air by weight than 1bar at 90c and I know been there done that, oversized aftermarket ic + spal fan on a stock sw20 at 1bar is still going to be up 75-80c in prolonged high load at speed on a 30-32c day, spikes over 105c heat soaked. Its a fools game without chopping the car up, running e85/ethanol, or some kind of water/meth injection

[@d4a]

That's so cool man I'm envious. You know everyone that has actually built up an mr2. I'll let the rest of the nonsense slide. Chill out, most people are here to have fun, exchange ideas and discuss without being aggressive and obnoxious. You're discrediting yourself with your tone. There are countless good builds of mid-engined cars with air to air and also rally scoops don't work on an AW11. Yes, w2a is also great and everything has its merits.

[@TheMapleDaily]

I wonder what youd do with a civic turbo build xD