TobiasRX

Hi

I've searched and searched but have never found any info about how much the stock fuelpump and injectors can handle. With this i mean Hp.

I know that it depends on what mods i have so here's my gonna have soon list:

Custom downpipe, High flow cat, exhaust, open air filter and an AEM ECU.

matty

you are going to get conflicting answers..but MY experience is that anything over 300 rwhp and u need to upgrade..people are gonna yell and say i am wrong but when i made 300rwhp with a 11.2 afr my injectors were is the high 80s..i since then bought an intercooler and i am hitting 100% duty. Other people have conflicting opinions and even some have conflicting experience....
My best advice is to put your car on the dyno and find out for yourself

TobiasRX

yes when everything is inplace im taking the car to a tuner. but i think i will be safe with my mods.

matty

me too

SleepR1

FWIW, if you have an upgraded IC (large FMIC core), intake, exhaust (dp/hi-flow/catback), 0.85 Bar boost (12.3 psi?), ported motor, Apexi Power FC, I'd DEFINITELY recommend 1300-cc secondary injectors and upgraded competition fuel pump.

Stock or medium IC core, boost down to 0.69 Bar (10 psi), I'd say you're ok with injector duty cycles in the 80% range.

Check out Wade's thoughts on the stock fuel system with mods.

http://www.newwave.net/~flanham/wlan...l/fuelfaq.html