BMW F8x M3/4 M4GTS Gearbox Software Model-135i N54 E82/E88 Stage 2 tuning will see

Stage 2 tuning will see around 290-300BHP and 630NM of torque

Customised Mechanics: Proportional slip ensures smooth transitions between driving states for predictable handling at the limit

ensuring stable performance under sustained hard use

G22 / G23 M440i

and long-term reliability

BMW F8x M3/4 M4GTS Gearbox Software Model-135i N54 E82/E88 Stage 2 tuning will seeDCT GTS Calibration Upgrade 90 (Workshop Install only) Improved downshifts to become more seemless Faster Up shift engagement Improved Sport Sport+ Modes GTS differential calibration optional The F8x GTS DCT caliberation upgrade does not interfere with any engine tuning you may have.