[alvinrenz]

I have a Auto 2011 e90 n55 xDrive, and I'm Slowly adding FBO and probably upgrade to Pure Stage 2 in the future. I'm wondering howmuch can we push this auto xDrive transmission or max torque it can handle??

According to RealOem my trans is 6hp19z. if I select the right manufatured date
PS. I'm doing XHP Flash tomorrow.

[nsjames]

you'll destroy the front diff before you kill the transmission and transfer box.

if you manage to get the ront diff to hold together above 400whp, the vtg will fail next.

the trans is the least of your concerns in the XI drivetrain. It should be the front diff and half shafts. They are not meant to hold high torque levels. If you launch it hard, you will destroy them

[Cory S]

I have 20K miles on my 6AT with a PS2. Multiple launches at the drag strip etc. Plenty of brake boosting launches in the mid 3 second 0-60’ times.....