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Old 05-27-2010, 02:45 PM   #7 (permalink)
dcb
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ah, well I ran out to get the numbers from the saturn, really just getting a handle on the ratios. I think it will take a program or fancy algorithm to minimize the distance from bsfc peak. At thats at least where I think this is headed, i.e. put in the mph/rpm for each gear and a target bsfc rpm and get the "optimal" shift points.

Code:
shift @2000 rpm
gear     1    2    3    4    5
mph     12   20   29   39   55
rpm1   800 1200 1379 1487 1418
Here is the BSFC for a saturn, so shifting @2000 rpm would never approach bsfc peak. Shifting @ 2800 would be pretty well centered and keep within %95 of peak bsfc, assuming you have a well tuned foot and buttmeter and can keep it at 125nm.

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