Originally Posted by
Mr.sentra_specv i run a 4" intake on my ve. general rule of thumb go larger on the intake pipe than the throttle body is in diam. example if you have a 2.5" TB go 3" intake.
I asume your also running a lightning maf right?
Originally Posted by
mercadoi have a 70mm trottle and sr16 maf will i see any gain from 3" to 3.5" and a velocity or will it just sound more
Well since 70mm is under 3in I think 3in piping is sufficent although it wouldn't hurt going little larger. The only thing though is that your intake pipe is like anything else. Its only as good as your bottle neck. And since your maf is only 3in I don't see any point in going with a larger pipe from your maf to your tbody... my opinion ofcourse.