Originally Posted by Sub14WRX
This is what my list is to get me to about 320WHP until I go for my Stage 2 Motor Build and reach 500. Maybe you can check out some of the parts and read their reviews and find some awesome parts.
TurboXS 50/50 BOV
GrimmSpeed Up-Pipe combined with 38mm Tial Wastegate
Invidia Downpipe Divorced Wastegate w/ 2 Bungs non catted
Grimmspeed Internal WG Delete
Tsudu Cat-Back Exhaust
Protune by Procom Racing with AccessPort
My tuner said I can easy put out 320WHP on DynoJet and around 310WHP on Mustang Dyno.
After that its on to more powerful Rod's and Pistons and Low Stage Cams
6 Speed STi Trans Swap
Procom FMIC with Tial Fully Atmospheric BOV
Tuner says I can hit into the 450-500WHP zone.
Thats all I would want until I can make my Subaru not a DD car and then I am going to try and hit 700WHP.
I am not trying to be an ass and rain on your parade but, I dont think your going to see 450-500 whp with those mods and the mods your tuner says will give you 320whp will be really close to making that.
Turboxs bov: No power gains and is really not a good choice for our cars.
Grimmspeed uppipe: Minimal power gains if any. Great product though. Love mine!
Tial wastegate: No power gains but, again a great product and love mine!
Invidia divorced wastegate dp: Good gains but nothing past a typical stage 2. Why go divorced wastegate if your doing external wastegate? I think a bellmouth would be better suited for a external wg set-up.
Tsudo catback: Again typical stage 2 power level stuff.
Protune/ap: Good stage 2 gains from a good tuner are to be had here.
6 speed trans: No power gains but, great reliability upgrade.
FMIC/Tial bov: maybe small gains and could even add some lag. Will cool charged air down some though.
Rods and pistons: More of a safegaurd upgrade and no gains here unless increasing displacement.
Low stage cams: Not sure how much gains these will give you but, I am sure they are not going to bump it in the 450-500 range.
Theres no way your going to make 500 whp on the stock turbo and fuel system. I see you dont plan on doing this immediately so, my advice would take this time to enjoy your new car and maybe go stage 2 with a protune. While your enjoying this do lots of research. Congrats on the new ride.