Open loop/MAF tune
09-22-2006, 11:05 AM
#21
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Originally Posted by RedWS6 00
The reason I done the OL - MAF tune is becasue it wasn't possible for me to activate 'Lean Cruise' mode as its not in the US PCM's, only in the Australian PSM's, like Holden HSV etc..
09-22-2006, 08:46 PM
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Is there any reason why you shouldn't turn on OL-STFT then correct the VE accordingly to the amount of error? Won't that put you right at your commanded A/F??
09-23-2006, 02:42 AM
#27
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Originally Posted by 2001 Pewter WS6
What does your PE table look like???
Is there any reason why you shouldn't turn on OL-STFT then correct the VE accordingly to the amount of error? Won't that put you right at your commanded A/F??
Is there any reason why you shouldn't turn on OL-STFT then correct the VE accordingly to the amount of error? Won't that put you right at your commanded A/F??
If STFT was turned on I beleive it would still try to shoot for 14.7AFR, as the narrow band sensors can say I'm at 14.7AFR or too high to too low. I dont think for example, if you have 15.5AFR commanded it would trim it to that. Maybe it will, I dont know.
What I do is log wideband, Commanded AFR, and use AFR Error for VE corrections.
09-23-2006, 04:42 PM
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CL-maf would be normal operation. Where the car uses the o2 sensors to modify fueling through ltft's. OL is not uising o2 sensors to modify fueling on the fly.
