I have a 09 S and occasionally when I do a WOT occasion sometimes the transmission will shift from I think 2-3 and there is a hesitation I between shifts. Like instead of ((pardon this stupid way of explaining it)) but instead of Vrooooooommmmmmm Vroooooomm. It occasionally will be Vrooooooooommmmmmm vroooooom. Almost like someone driving stick if you can imagine that. Any one else have a similar issue with their pepper? Any suggestions? Mods for my truck are fab speed bypass pipes, intakes, sprint booster and fabspeed tips.

 

Not sure but from they way you described it, it sounds pretty normal. If you are light on the throttle the car will shift at a lower RPM. At WOT it will wait until close to redline to shift. Unless it's actually hanging up at a certain speed/rpm before shifting.

 

Drive in sport mode with the PSM off. Or get an e-throttle signal booster. They all seem to shift this way stock.

This explains what helps. The same for the pig too.

http://www.pelicanparts.com/techarti...or_Booster.htm