im wondering what kind of power i should put down with hallman mbc set at 20psi, 3" tbe with test pipe, 3" hard pipe to turbo with k&n style filter, and an apexi s-afcII tuned by ryan at RnR racing. driving wise the gain feels huge over what stock was but i think 300 whp might be optomistic. what do you guys think?

 

i ran 22.5 psi on my car without tune, with turboback exhaust, no cat, no intake, mbc.

got 298whp.

300 with a tune should be easy, with a bit more boost.