Hey guy I'm loving the evo just amazing when I get a chance to drive it but I've caught the tuning bug and after going to a track day with a friend I do think more power and better handling will be more fun. Although I wouldn't say I'm getting 100% of what the car is capable I would say I'm extremely close, I'm not a novice and have been driving on the track for decades so I think power is now the right track.

I'm not looking for crazy 800hp builds but more about response and a more linear power curve Vs all out power. I would be happy to go with a stroking route or even a 4G64 build. I'm looking for around 400whp with the maximum response possible, I wouldn't mind running a smaller turbo at higher PSI vs a larger one. I can run race gas as it's not a daily.

All I have now on the car is an intake, upgraded IC, fuel and tune.

 

LICP, cams, injectors, clutch, FP red, e-85 and retune. And with the mods you have you should be over 400whp

 

You'll need the above plus a FUEL pump. My walbro pump ran out of juice pushing 474whp on my car. I have a FP green and make almost 400whp on 91 octane pump

 

Yes you will need a pump and larger injectors and run e85 u wont ever turn back

 

Yeah u definitely don't need an FP and e85 one or the other will do. Fp and pump has or stock turbo and e85. The second being the cheaper route. Money wise I would do bov, licp, wal bro, injectors, e85 , tune. that way u don't fork out 2k for a turbo kit. You will also need an upgraded exhaust if u don't have one already. Cams wouldn't hurt but could be done without probably

 

I made just under 400 with :

3" tbe, walbro 255, intake, 9 turbo, kelford 264 cams, bov, o2 dump, 1200cc injectors, short route pipes, 3'' intercooler, 93oct tune @ 30psi

no need to spend thousands on anything else.

 

30 psi? Not too bad but aren't most peoples with EVO's pushing less PSI and in the 400s?

 

I'm at 27.5 psi at 474whp. And why does everyone keep saying BOV like it adds hp. Stock 9 valve is the best and there is tons of threads on this forum that prove it.

I'd put an air intake, LICP, down pipe, catless exhaust since its a track car, 1200 cc fuel injectors, walbro pump, and a tune on e85. You'll be very close or right over 400hp. I have an extra used walbro I'd sell for dirt cheap if you want it.

 

using 264 cams, 272's would yield 10-15hp more.. e85 maybe another 15-20hp

 

this guy is right on with what ive seen with e85 on my own car and all in my area that went this route. kelford 272's or gsc 272 s2. both great cams with nearly identical power gains. debatable which one is better. gsc is cheaper though. single walbro is good for high 400's on e85. im at 452whp at 28psi of boost on a 3076r. stock cams in right now. but my fuel is fine. i have 1450cc injectors (plan on more boost later) and i am nowhere close to running out of injector

 

I said bov because if he went the stock turbo/ e85 route he would likely be at 28psi or more and the stock bov usually leaks around 26. So just for efficiency. I made 415 vd dynojet with mods in sig and I DD the car and have no drivability issues at all.

 

wow thanks guys appreciate the feedback. I didn't realize the stock turbo had that much potential.

How's the response with that setup?

Thanks awesome especially being a DD

 

It's the best according to who? It's the best at helping the car to feel very stock and have good driveability, but I've seen many of the metal ones leak at 24-26psi. This is not enough boost pressure to get you to 400 unless you swap out the turbo or have some other parts that could add up to some serious $$.

Otherwise, I agree with the mod list although almost no one has said MBC or any kind of boost controller. That has to be factored into the price. Cams will help, but it can definitely be done without them like SVT said. If you have to pass emissions you can get a race cat and add an O2 dump.

 

yes the stock turbo has very good potential i make 380whp with intake, o2 housing, kelford 272 cams, 3" turboback, 3"fmic, uipc/licp, walbro 255, GM 3port EBC, and tune @25psi!
if youre looking for a turbo with good low end and linear power look into the bbk full as i think that turbo will be my next step!

 

Im just wondering your at 452whp on the stock evo 8 cams??? not doubting just wondering I personally haven't seen or heard anyone break that mark on the stock 8 cams unless you have alot more done then listed im just wondering thats all