Quote:
Originally Posted by littlevictories
well I've been playing with OLSD so currently my AFR is like 16.5 at cruise, low load and the total advance is around 40*. yes it is jumpy. the truck computer uses a bunch of different factors to create a "final spark" number if you will.
At the time I first noticed that the timing would go way out to 45* at highway cruise I was basically stock, closed loop with MAF. maybe a few basic VE edits (in addition to new injectors) to get my LTFTs in line.
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Yes, but they can all be manipulated. If your getting timing that you didn't add yourself (or whoever tuned it), you can take a look and see WHY. 16.5 is very lean at cruise, I barely go that lean on decel.
Under the condition you mentioned, you want to be a hair fat, as that particular range is prone to knock. 40* is still a large amount of timing IMO, spark tables shouldn't show much over 32.
What injector are you running? Did you rely just on VE, or was PE used also?