Originally Posted by
Taz
Zeroing out those parameters prevents the PCM from reducing the shift pressure that you selected. The idea is shift feel consistency, not necessarily "super hard" shifts. As an example, when operating your car on the street sometimes it may shift just the you wanted (or programmed), other times it may seem a little "off".
So whether its a daily driver, tow vehicle, or competition vehicle I will "zero out" the PCM ability to reduce shift pressure - and then tune shift "feel".
I leave the high pressure adjust (PCM added pressure) active.
Hopefully that makes sense ...
Regards,
Taz