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Ok so can u take me to the part where it talk about the map cuz i still dont know witch turbo im gonna go with from vf22 to vf37 all i know i want at least 400hp
 

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Well that post only talk about is i want or not do it but i bought this car just to built it im a mechanic and want a fast 4 cyl . To be honest i bought the car thinking that because it was an wrx it was gonna be a fast car but i was wrong .is not fast at all . I have an scion tc supercharged that come already supercharger no mod and it is way faster than the wrx . I was disappointed but now i have the car and want it fast no meter what.
 

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I cannot name a VF turbo in the appropriate orientation that will help you achieve your goals. In the absence of more informed responses, follow the link in my signature.
 

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If you are not on a phone, you should see a link below each of my posts. It says WRX info courtesy of The J. Click that.
 

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Aha ok that explains it. In that link are categorized links dealing with ECU, exhausts, etc. follow them all before money changes hands.
 

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Ok. I wonder though whether your car is running correctly right now. These aren't boring cars.
 

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Well maybe they are fast for someone that never drive a fast car . And yes this car is mechanical perfect . But like i said im coming from an 2.4 tc supercharged less weight quick boost from 0 up . Im maybe have to get used to
 

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Good day to all! I don't even know where to begin. Am new to FI engines and am residing in Malaysia. Just took into possession 2 months ago of a 2015 WRX STI (JDM) and since the modding needs are strong within me, would like to seek some advise on my direction. It's a weekend car with about half a dozen trips to the Sepang International Race Circuit yearly.

Have recently changed the following and it made a great deal of difference in shifting.
Perrin Shifter Bushing Kit
Perrin Rear Shifter Bushing
Perrin Transmission Mount

My next move would be to replace the rotors, though a 6-pot conversion is on the platter as well. Overkill? Perhaps, but I love the bite it produces when I had it on my JDM Civic FD2R. Not that the current Brembos are bad.

Another option is a direct replacement on the cast pistons to a forged piece. My consideration is on the Cosworth model.
http://www.cosworth.com/products/performance-parts/forged-pistons/subaru/
Cosworth Forged Piston Set 99.5mm 8.2:1 CR Subaru Turbo 2.5L(inc. 2006-2014 WRX / 2004-2015 STI) 20003674 at RallySportDirect.com

Thus, considering that I may want to opt for a similar size pistons of 99.5mm bore, would I require a retune if I should opt for this route? I know it may sound silly that I would opt for the same size since I am already dissecting the engine. My main concern would be on long term reliability, not so much on gains though that would be welcomed in the near future, hence the forged option for stability. The lack of reputable tuners here is a headache for me, hence my concern with changing the size of the pistons. Am I right that the stock conrods are forged?

There is such a tonne of parts that's available, and unless I have a bottomless pit of moolah, I can only and slowly, mod what I think my direction would fit me best. Appreciate any suggestions or advise.
 

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Admiral Ackbar the 1st
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Discussion Starter #233
Good day to all! I don't even know where to begin. Am new to FI engines and am residing in Malaysia. Just took into possession 2 months ago of a 2015 WRX STI (JDM) and since the modding needs are strong within me, would like to seek some advise on my direction. It's a weekend car with about half a dozen trips to the Sepang International Race Circuit yearly.

Have recently changed the following and it made a great deal of difference in shifting.
Perrin Shifter Bushing Kit
Perrin Rear Shifter Bushing
Perrin Transmission Mount

My next move would be to replace the rotors, though a 6-pot conversion is on the platter as well. Overkill? Perhaps, but I love the bite it produces when I had it on my JDM Civic FD2R. Not that the current Brembos are bad.

Another option is a direct replacement on the cast pistons to a forged piece. My consideration is on the Cosworth model.
http://www.cosworth.com/products/performance-parts/forged-pistons/subaru/
Cosworth Forged Piston Set 99.5mm 8.2:1 CR Subaru Turbo 2.5L(inc. 2006-2014 WRX / 2004-2015 STI) 20003674 at RallySportDirect.com

Thus, considering that I may want to opt for a similar size pistons of 99.5mm bore, would I require a retune if I should opt for this route? I know it may sound silly that I would opt for the same size since I am already dissecting the engine. My main concern would be on long term reliability, not so much on gains though that would be welcomed in the near future, hence the forged option for stability. The lack of reputable tuners here is a headache for me, hence my concern with changing the size of the pistons. Am I right that the stock conrods are forged?

There is such a tonne of parts that's available, and unless I have a bottomless pit of moolah, I can only and slowly, mod what I think my direction would fit me best. Appreciate any suggestions or advise.
Hey mate,

I think you would get some better input with a new thread instead of in this old thing - I can move your post to a new thread for you if you prefer?
 
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