View Full Version : A/F ratio

08-11-2006, 04:15 AM
does anyone know what a/f ratio works the best, safest with 3sgte throught out the rpm range?
i have the SMT6

08-11-2006, 04:37 PM
From what I've been told around 11 - 11.5 I don't know myself.

08-12-2006, 06:35 AM
yeap towards the upper 11s not over 12.2, thats how i run em

08-12-2006, 08:10 PM
Depends on how your cooling is really. If you can cool your intake charges well you could probably get 13:1. Now, the best power afr's are 12.5 rich, 13.3 lean. So between those afr's will get you the most power for your set up. You just have to make sure your intake charges are low enough to keep detonation away.

08-13-2006, 04:42 AM
is it the same a/f ratio troughout the rpm range?
should it be richer at higher rpm and close to stoichiometric and lower rpm?

08-13-2006, 03:12 PM
I'd tune for 11.5:1 under WOT. Partial throttle and cruise I'd go leaner.