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Old 02-01-2015, 03:34 PM   #17 (permalink)
j12piprius
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pris prius - '12 Toyota plug in prius
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increasing to peak rpm, not beyond

Quote:
Originally Posted by awcook View Post
If I gently squeeze into the throttle, RPMs go up slowly, and I get up to desired gal/hour (3). When I quickly go onto the throttle, for about half of what I do when I slowly squeeze, the RPMs jump up to 2.5-3k and I get about 4 gal/hour for a few seconds, then down to what it is supposed to be, which is about 2 gal/hour.
Perhaps you're simply overshooting the rpm, and then coming back down to a desired peak, which is not the same thing as gradually increasing to that peak.

I'm speaking of either quickly going from 1500 (for example) to 2500 rpm right at 90 MAP, and then gliding, vs slightly more gradually going from 1500 to 2500 rpm, i.e. more gradually up to 90 MAP which still only takes a few seconds, and then gliding. There is only a slight and subtle difference between these, and no overshooting involved either way.
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