Originally posted by Jacques
Ditto (hi, THATPRELUDEGUY, btw 
). I no longer have that black smoke anymore after putting in my V-AFC.
Jacques, odd seeing you over here!
Anyway I'm guessing that's why the largest gains are made with the VAFC in the VTEC transition RPM's. Was yours Wideband O2 tuned? If so is that the part of the RPM range that fuel is cut the most?