What Am I Missing

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11-15-2013
motor mouth

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What Am I Missing

Car pulls to about 4600 at commanded AFR of 12.8 then starts ramping in a richer AFR and ends up at 11.32 . Can someone point out what I'm missing? I need to figure this out before I can go any further. Any and all help is greatly appreciated!

Car is a 2014 Corvette Auto.

Attachment 41861
11-15-2013
Bill@HPTuners

COT maybe?
11-15-2013
Bill@HPTuners

or it could be the eq ratio vs rpm(alc) table kicking in(looks like you disabled cot already)
11-15-2013
motor mouth

Quote:

Originally Posted by Bill@HPTuners

or it could be the eq ratio vs rpm(alc) table kicking in(looks like you disabled cot already)

Just changed that table, I'll do another pull and post the log.
11-15-2013
SultanHassanMasTuning

not just because your changed your EQ ratio means you will get the desired AFR, MAF changes need to be made
11-16-2013
jim2092

The EQ ratio takes the AFR (alcohol) to 12.27 at 4600 rpm and 11.75 at 6400 rpm even without any other multipliers involved.
11-29-2013
InnovativeDiesel

Did you figure anything out? It looks like you already changed your MAF xfer in the tune. Was that an update you made after feedback or was it something you had previously changed?
12-05-2013
motor mouth

Quote:

Originally Posted by SultanHassanMasTuning

not just because your changed your EQ ratio means you will get the desired AFR, MAF changes need to be made

Thanks for the obvious. If you read the question it says my command isn't changing.

Quote:

Originally Posted by jim2092

The EQ ratio takes the AFR (alcohol) to 12.27 at 4600 rpm and 11.75 at 6400 rpm even without any other multipliers involved.

Thanks for you reply. It was the alcohol table.

Quote:

Originally Posted by InnovativeDiesel

Did you figure anything out? It looks like you already changed your MAF xfer in the tune. Was that an update you made after feedback or was it something you had previously changed?

I had already made changes to the MAF, my question was regarding why my commanded AFR wasn't equal to my input, but changing the alcohol PE table fixed the problem right away!
12-05-2013
InnovativeDiesel

Thanks for the response, good to know.
05-07-2014
ayousef

so did anyone figure this out yet?
05-08-2014
SultanHassanMasTuning

alcohol table needed to be adjusted.
05-08-2014
ayousef

Quote:

Originally Posted by SultanHassanMasTuning

alcohol table needed to be adjusted.

I thought of trying this yesterday but I sent my truck to the paintshop for some work, I don't know why would alcohol tables even get in since flexfuel is disabled, it doesn't make sense for it to "Gradually" richen, and it happens on different trucks as well.