Lets talk abour A/F ratio
#1
10-18-2009, 04:21 AM
Lets talk abour A/F ratio
What are you guys running for you A/F ratios at:
- idle
- light boost
- full boost
Last edited by 1990hondahf; 06-27-2010 at 11:25 AM.
#3
10-19-2009, 11:58 AM
Your AF ratio should depend on manifold pressure more than anything else. The fit uses a wideband, and the FIC can control it very well, so your AF ratios should be dead nuts as follows:
Idle / cruising (anything below 5-7" of vacuum) - 14.7-15.0 (I have mine running 15.0 for a hair better gas mileage)
Transition to boost (anything between 5" and 0) - AFR should smoothly ramp down to ~13 - 13.5 at 0 vacuum
In boost (anything above 1psi) - you should be running in the low to mid 12's.
Ignition is another story, I'm running a .68 degree/lb of boost step retard, with additional timing pulled in low RPM boost as this area tends to be a tricky one.
Idle / cruising (anything below 5-7" of vacuum) - 14.7-15.0 (I have mine running 15.0 for a hair better gas mileage)
Transition to boost (anything between 5" and 0) - AFR should smoothly ramp down to ~13 - 13.5 at 0 vacuum
In boost (anything above 1psi) - you should be running in the low to mid 12's.
Ignition is another story, I'm running a .68 degree/lb of boost step retard, with additional timing pulled in low RPM boost as this area tends to be a tricky one.
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