safe boost for s15

[MikeDombeck]

i was told i have a walbro 255, and stock injectors, apexi n1 3 inch exhaust from turbo back, hks air filter, ssq bov, twin plated clutch, what is a safe amount to boost, i was thinking 12 but not sure.... greddy mspec intercooler kit in the mail

[happysr]

12 to 15psi would be just fine on a s15. on my s13 red top im running 12 for every day and 15 when i want a little more.