I would like to lean out the whole open loop affair. it seems the numbers get smaller ( richer?) when the engine gets warmer, now back in autoshop 101, warmer engines suppose to get a leaner mixture. same goes with the lv8 vs.afr% change richer ( smaller number) with less loads and leans out with more load. can someone explain?

0% should get you 14.73 or whatever is stoich in your bin. Positive values will enrichen the AFR relative to stoich. Negative values will lean-out the AFR relative to stoich.

I would suggest getting to stoich as quickly as possible coolant temps around 100 F for example (assuming that your closed loop blms are in order).

I also like to zero the load influence on the target AFR in open loop. I don't see any need for load based enrichment, unless you're deliberately running very lean in open loop, for cold start/warm up emissions reasons.

IIRC the $6E open loop AFR (and PE) is the same as how the $8D code works. Need to take both the CTS modifier and the load modifier both into account. They are a percentage change from stoich.

Since it is the same as $8D check the Tuning Guide Book sticky, Chap 5, either '7730 or $8D section. There is a fueling calc write up that Traxion did that explains the math behind it.

RBob.

thanks, i made the adjustment, i'm assuming the stock entries are a percentile either positive or negative from stoich, correct?


why do stock bin have these entries? is there a reason for this?

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