Author Topic: Frequent max lean on decel with CEL (vems)  (Read 2543 times)

Offline smurfinator

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Frequent max lean on decel with CEL (vems)
« on: April 16, 2017, 07:53:12 pm »
I have been playing with overrun fuel cut and resume and they seem to make no difference, also I cannot discover any rhyme or reason to why decel is sometimes 1.05 or 1.73+++.  I have warning light hooked up so I can pass emissions and the light is always turning on for max lean - as well is turns on for 30 seconds on startup, which could fail my emissions test.  Can i turn the lean feature off?
Audi ABZ 4.2 V8 in 1993 90 quattro
TTV 60-2 flywheel and cam sync
firmware: 1.2.20

Smurf blue (BMW Laguna Seca), hence the name!

Offline smurfinator

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Re: Frequent max lean on decel with CEL (vems)
« Reply #1 on: April 16, 2017, 08:22:15 pm »
Can I edit config manually to increase the lean threshold for CEL or disable CEL while oxygen sensor is warming up?
Audi ABZ 4.2 V8 in 1993 90 quattro
TTV 60-2 flywheel and cam sync
firmware: 1.2.20

Smurf blue (BMW Laguna Seca), hence the name!

Offline thatgearheadmarek

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Re: Frequent max lean on decel with CEL (vems)
« Reply #2 on: August 05, 2019, 07:26:53 pm »
smurfinator, did you ever figure this out? I too have to do emissions and it won't pass if the CEL comes on every time they let off the gas. VemsHelp says to change 1.73 to a really high number to turn it off. I tried that and it doesn't work.

Offline GintsK

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Re: Frequent max lean on decel with CEL (vems)
« Reply #3 on: August 17, 2019, 02:22:23 am »
smurfinator, did you ever figure this out? I too have to do emissions and it won't pass if the CEL comes on every time they let off the gas. VemsHelp says to change 1.73 to a really high number to turn it off. I tried that and it doesn't work.
F1 help describes it in not most plain English. Just rise MAP margin. Margin relates just to couple values, not all.