This is an advanced tuning package for the high-performance BMW Z4 35is (E89), equipped with a Siemens MSD8x series ECU. This package provides a clear upgrade path for the enthusiast, containing both Stage 2 and Stage 3 calibrations designed for modified vehicles intended for track and competition use.
The Stage 2 file is engineered for cars with upgraded bolt-on hardware (downpipes, intercooler, intake) to maximize the performance of the stock twin-turbo setup.
The Stage 3 file is an extreme calibration for all-out performance builds, specifically designed for vehicles that have been fitted with upgraded or hybrid turbochargers and a high-capacity fuel system. This package offers the ultimate software solution for your Z4 35is tuning project.