MTM Allroad ECM software modifications are available for both 6 speed and Tiptronic models. With the modification, you will see 306 reliable and honest horsepower and an astonishing 354 lb/ft of torque! Designed with U.S. emissions and gasoline quality in mind and compatible with all dealer diagnostic tools. You simply send your original ECM to us overnight, and in turn, we modify your ECM and return it overnight, typically giving only a 48-hour downtime. There is a lifetime warranty on software and workmanship.