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Old 08-08-2018, 11:15 AM   #36
S2K+1LE
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Drives: 17 SS 1LE | 07 S2K
Join Date: Sep 2017
Location: Arizona
Posts: 375
I feel like we should mention that modern DI motors will completely cut the delivery of fuel during off-throttle situations including transmission shifts... so... I'm not really perfectly clear on how shifting impacts economy.

There are many other factors not being discussed here, such as the overall gearing (is the spread of ratios CLOSER with the 10AT at the lower end and not in higher gears which impacts fuel economy), weight, final drive ratios, wheel/tire selections... I mean we're basically looking at one single thing and trying to pretend we're GM Powertrain engineers here.
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