Hi guys!! I've a 05 wrx(not STI) and i want to take it to another level hehehe :devil: , somewhere near 400hp(not whp), so i choosed a pe1820 for that and i know that the stock tranny can handle that much power so i'll upgraded it for STi RA Gearsets and a proper clutch...so i want to know if my stock engine can handle the turbo and the pressure (about 21 psi), or if it's better/really needed to go forjed and so...

PS: i'll be running aps tmic, aps 3"turboback, bigger injectors and fuel pump and a engine management

Thanks

 

w/ a custom tune....yes.. it'll handle it although I personally would not run 21psi on a daily basis...maybe 17-18psi on a stock motor....

i run 16.5psi daily on a Monster VF30, i also have a more aggressive map @ 18psi.................with my Zilla TD05H-20G I'm planning on running around the same daily, then have a more aggressive map for ~21-22psi or whatever Jorge(RiftsWRX, the tuner) decides is best....

 

I think thats kind of high boost for stock internals.

 

so if i want to run the pe1820 i should have forjed internals right??and would only forjed pistons and conrods hold it or i should get anything else???

 

i've seen pe1820 with around 17-18psi on 91 pumpgas and the motor is stock.... and it runs good... as long as the car was tune right... it'll be fine...

 

i can run 20 psi daily and track at altitude on ecutek.
and i use a fogger at da drags.

 

It will be fine. You need up and downpipe, exhaust, injectors, fuel pump and a tune.