Junior Member
i just hooked up a V-AFC to my 93 honda prelude vtec...and i don't know how to tune the fuel ratio so that i'll run better...and if i change the vtec engagement point then do i need to tuned the fuel as well...somebody help me out....thanx...


Super Moderator
you can't accurately tune the fuel settings without a dyno and a wideband.. what i can tell you is that a google search on "tuning a apexi vafc" leaning the h22 5% across the board netted him very good gains... although this isn't the case for everyone... it's a starting point... get yourself an a/f gauge too