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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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Greetings and Happy Holidays,

Very new here and to the Subaru world. I have owned a modded, 300 whp Mazdaspeed3 for the past 11 years that I still have, but just picked up a low-mileage '17 WRX Premium to daily drive. I have been reading through lots of these threads about mods and have gotten a good idea of what it takes to make a safe Stage 2, 310-330 whp in this car on 93 octane, but the ambigiuity for me sorta lies within "what order" should I smartly do these mods in. That seems to be what this thread is for. As with most people, I don't have the funds to go all out now, but probably willing to spend $500-1,000 at a pop every so often to get to my end goal. I am not including styling/engine dress up mods in this because that is mostly subjective and straight forward.

The suspension side of things seems straight forward and not much different than any other car I have modded. Springs, dampners, swaybars, endlinks and bushings. Any gotchas with this car's suspension? Priorities/concerns/avoids? Is a strut brace and pitch-stop mount worth it?

Moving on to the transmission, I plan on working on the shifter, whether it be with Perrin's products or a whole new assembly like the Boomba. It will probably be one of the first things I do since it won't require a tune and I can get my money's worth out of it every day even at stock power levels. Any suggestions on going in one direction or the other?

As far as engine mods go, I don't want to have to do things twice or spend more money later on because I was near-sighted and wanted instant gratification. Of course, I have never made that mistake before. ;) As with some of my cars in the past, I have installed a mod and later thought, "I should have just spent a little more and installed the other mod I wanted to install while I was in the same area". There are just certain areas of an engine bay that are a pain in the nuts to get to and it helps to group mods, when able, in order of installation convenience though, obviously some of those will need a tune. I know some tuners out there like MAP offer OTS tunes when you buy their Stage packages, but once you start mixing part manufacturers you get into a grey area. I would rather not spend ginormous amounts of money on the dyno. I do have Cobb AP experience since it is what I have used for almost a decade now on my Speed3 with good results street tuning, but it appears to me the Soobies are a little more finicky with the quality of the tune.

So for the people who have done this many times before, in a perfect world, what would you do or what did you do that you would have done differently knowing what you know now? Why did you pick the Grimmspeed intake or EBC over the Perrin models, ect.?

Lots of holiday sales right now with the online vendors, so I am ready to get started. What I am thinking of doing to start things off are the Perrin rear shifter bushing, shifter stop and solid shifter bushing, along with a new shift knob. I'd also like to do their strut tower brace, 22mm rear sway bar and front/rear poly endlinks and finally their pitch-stop mount.

Thanks for the inputs!
 
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