BMW M3 E46 XperTune Performance Software 957 Turbo / Turbo S (2008-2010) Includes all required Hardware and

Includes all required Hardware and Gaskets

these high-flow headers include HJS catalytic converters

Tuned = 424 HP / 297 ft-lbs of torque

The patented RENNKRAFT® design allows you to easily swap between running a catalytic converter to stop smells and keep the environment clean or install the cat bypass pipe for racing use

Valvetronic design includes 70mm bypass pipes and a 63

BMW M3 E46 XperTune Performance Software 957 Turbo / Turbo S (2008-2010) Includes all required Hardware andHP: +22 TQ: +16 Achieve maximum power from the BMW M3 3. 2L straight six engine without sacrificing drivability or reliability by optimizing the engine's performance. Fabspeed Motorsport offers an alternative tuning method for vehicles equipped with ECU's that traditionally required bench flashing. No longer do you need to remove your ECU and mail it in for a tune. The Handheld device interfaces with the OBD II port on your vehicle and your computer