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Tuner in Training
AFR goes rich when letting off throttle
Hey guys. What could cause my AFR going very rich (as low as 11.1) when I let off the throttle. The further down the throttle is before I let off, the richer it goes. It goes rich for about 1-2 seconds, then climbs back to normal.
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Tuner in Training
Transient fueling, i.e. wall film,(effect is just like an accel pump on a carburetor when you hit the throttle - opposite effect when lifting):
http://www.hptuners.com/forum/showth...ight=wall+film