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STG2 is for those who want the most possible performance from their car without changing to a bigger/hybrid turbo
XHP DCT Gearbox Tuning Packages
BOSCH MG1CS003
as well as improves the look of the engine bay
BMW E90/E92/E93 M3 - DCT GTS Calibration Model-Cooper SD N47 STG2 is for those whoDCT GTS Calibration Upgrade Additional 90 (Workshop Install only) Improved downshifts to become more seemless Faster Up shift engagement Increased Clutch line pressure at higher RPM's to prevent slippage. Faster transition moving from Drive to Reverse. Default D2 Shift Mode on start up S Mode Shift Memory The E9x GTS DCT caliberation upgrade does not interfere with any engine tuning you may have.