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Posted: Mon Dec 26, 2005 6:04 am
by boost junkie
Professor, I'd go richer in boost. @ 170kpa 13:1 air/fuel is dangerous. Above 100kpa dip it into the 12:1 range real quick...
Posted: Mon Dec 26, 2005 7:33 am
by efahl
boost junkie wrote:Professor, I'd go richer in boost. @ 170kpa 13:1 air/fuel is dangerous.
Oh yeah, I'd say more like 10.5-11:1 for the high boost sections of the map until you have some experience with the motor and have the ignition dialed in fairly well. This will kill power, but shouldn't kill your motor.
Eric
Posted: Mon Dec 26, 2005 9:16 am
by Mad Professor
Something more like this?
Posted: Mon Dec 26, 2005 10:15 am
by efahl
If you have a catalytic converter, everything below about 90 kPa should be 14.7. If not, then lean it out a whole bunch and save some fuel. Go as lean as you can before you get lean misfires, usually 16.5-17:1 with most ignition systems.
Eric
Posted: Mon Dec 26, 2005 1:34 pm
by ChaosAD
Should the AFR below 90kPa change with revs too? or just be the same throughout the rev range?
Posted: Thu Dec 29, 2005 1:28 pm
by keithmac
Is this for closed loop mixture control? if your O2 sensor goes bad on boost you may destroy your engine.. I manually mapped the boost section on my MS1 but MS2 may work differently?