Sutphin Tuning

I create custom transmission tuning for the BMW models 335d, X5D, 335xi, 535xi, and 335i using the 6 speed ZF transmissions 6hp19,21 and 6hp26,28.
If you already own the XHP Flashtools program and bought the general license you have the ability to flash custom transmission tunes. If you are looking for a great overall all in one driving or racing performance transmission tune with fast, smooth shifting, better throttle response and feel of power you have come to the right place.
DRIVE MODE: is very smooth, quick shifting, better shift points, improved throttle response, and power. Perfect for daily driving and comfort, without sacrificing performance and power.
SPORT/MANUAL MODES: are much more aggressive, faster, firmer shifts, higher shift points, throttle response and power. Perfect for racing or very spirited driving.
I have 100% unlocked the 335i and 335xi with a combo of the DME being unlocked and my TCU tune.