Sr20blacktop

[LivelyZ]

Hey I purchased a 240sx a week or so ago claiming to make 240-250whp

. It's running a greddy (?) exhaust, stock blacktop turbo, K&n air filter, apexi standalone, maf deleted, bov, fmic, etc. Anyways I believe it's on the stock fuel system. currently running 8-9psi of boost. Is there more room on a stock motor for more boost? 10-12 psi or is that asking for trouble ? What size injectors are needed to make more power? Any other recommendations?

[Kingtal0n]

If it is an S14 engine with the S14 JDM Ball Brearing unit you can safely go to 12psi. More is possible but it will wear the turbo out quickly, especially if you had a shitty bypass.

Its on an apexi stand-alone unit, so your best option for more power is to install 740cc injectors, and a GT2871r or similar turbo, for a 320rwhp on stock cams, or 350-370rwhp with a set of upgrade cams (S3 JWT I recommend for OEM springs)

[LivelyZ]

I was told it was a s15 black top with s15 turbo , i believe since it's a swap I may only have the ka24 fuel pump