We found over the weekend that the AT's with the additional torque start having torque related shift issues 4th to 5th at WOT. Not sure if it's the converter, but I'm looking for a 335d converter. Also want to research the option of going with a ZF26 as a replacement for the ZF19. It's worth looking into.
Originally Posted by benzy89
Car should already be FBO before upgrading your turbos. Engine is fine, just make sure you have a tune that supports aftermarket turbos. An MT will eventually need a clutch upgrade & an AT will probably need an overhaul once it starts to slip