Quote:
Originally Posted by brick59
Yep.
Tap shift is not adaptive and that is why it is slower. When a 6l80/6l90 is in normal or sports mode the computer anticipates the oncoming shift and it prefills the clutch packs, when it’s in tap shift it has no way to know when the command to shift is coming so it can’t prepare for the shift. These transmissions are complicated on how they hand off from gear to gear.
If you're drag racing have your tuner set it up for sport mode to shift when you want it to, and let the computer do the work, the car will be faster and more consistent.
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Exactly, that's the thing I love about these trans. In my Sedan when in Sport mode, and you floor it coming out of a turn the DIC flashes Performance Shifting Enabled. Once it does that, the TCM just takes over and learns your driving style. Now when it shifts it hits hard, and even harder after getting it tuned.
My ZL1 learns and is very badazz when it shifts up and down. It does all that rev matching even when shifting itself. I love Chevy for programing these things to run the way they do.