High Octane Timing table- why lower at higher gms/cyl
10-10-2002, 11:18 AM
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High Octane Timing table- why lower at higher gms/cyl Anyone have an idea why the stock timing curve tails off at higher MAF rates ? At high rpm, it peaks relatively early in MAF rate and then trails off toward 17 degrees... I guess this means that in 1st or 2nd at redline you'll get the peak 26ish timing, but in 3rd or 4th (where mAF is very high presumably), you'll only use 19 degrees of advance-- anyone know why this is ?
10-10-2002, 07:35 PM
#2
Re: High Octane Timing table- why lower at higher gms/cyl I haven't ATAPed this but just how much difference at WOT have you seen in MAF flow in 2nd gear versus 4th? I would expect only a small differential do to load (A/F will vary a couple tenths by load too) since the engine is making about the same power.
10-10-2002, 09:55 PM
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Re: High Octane Timing table- why lower at higher gms/cyl I was just presuming on the difference between 2nd and 4th; you're probably right. Not enough straight empty roads to test that one around here.
10-10-2002, 10:05 PM
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Re: High Octane Timing table- why lower at higher gms/cyl Maybe it's just a built in protection for 5th gear WFO extended period runs ? Like the Silver State run or something ? I'd like to know more about it that's for sure