6_Myles

Hi all,

the ‘11 I just picked up has an OE Tuning pump gas tune. Does an aftermarket tune change shifting strategies/pressures at all or is that handled by the TCU?

I seem to have a slow shift between 2-3 and 3-4 in WOT (close to a full second) and some weird surging during light throttle/slow speed. Runs great in normal throttle/acceleration. Just new to the m156 drivetrain so trying to get my feet under me.

as always, thanks!