i have a 2011 wrx hatch in WRB. i currently have a catback on the car but i have purchased a bunch of parts for my stage 2.5...im just curious to see what amount of power i will be making. i have 3" dp to match up thte 3" catback thats already on the car, ks tech 73mm maf short ram, dw 850cc inejectors and walboro 255 fp and i will be getting a dyno tune. any imput from you guys will be great. oh and this will all be with the stock turbo!

 

without upgrading your intercooler which sucks, you're lose a lot of flow there and possibly blow the end tanks like I did the day I got tuned. Get that first and tune it, you;ll hit near 300.

 

with those mods you listed a few more you could do would be
Grimmspeed Ported exhaust manifold
Grimmspeed Crosspipe
Grimmspeed Uppipe
Grimmspeed Air Oil Separator
Grimmspeed 3 port ECBS
and to get the car tuned on both E85 and pump gas

 

my 2012 wrx made 265 hp and 287 lt ft torque with an aem intake and perrin downpipe. Tuned by EQ. I have the stock catback. EQ tuned an identical wrx with the same mods but with an invidia catback and it made 275 and 303, so im sure with those additional mods you'll get over 300 whp

 

never heard of stage 2.5 but with those mods you will have about 280/315 if you go to the eq dyno, but like others have said you might want to get a new TMIC but you don't have to.

 

2.5 should be turboback, intake, intercooler, headers, injectors and tune. Its everything you can get without changing the turbo out.

 

Are you running catted, high flow, or catless TBE?

 

Btw I think is guy is from east coast. He wont know what eq is or will be heading their anytime soon

 

damn out of stater's with their better fuel!