Fabspeed BMW M3/M4 (F80/F82) 2nd X-Pipe (2014-2020) Select:Select Trim Level=M Performance On our dyno we saw

On our dyno we saw curve gains of + 28HP crank HP (+24 horsepower at the wheels) and 16 ft/lbs tq

Increase the power and driveability by optimizing the ECU

This cat-back exhaust system will produce a rich throaty sound

0L V6 Bi-Turbo Engine by reprogramming various sensor inputs

Fabspeed BMW M3/M4 (F80/F82) 2nd X-Pipe (2014-2020) Select:Select Trim Level=M Performance On our dyno we sawIncrease power and sound with a free flowing x pipe section that replaces the restrictive and redundant factory secondary catalytic converters for increased exhaust flow. This system was born through a customer's request for a more aggressive exhaust note out of his M Performance rear muffler equipped M3, and when it comes to new development we are happy to oblige. We have developed a secondary cat bypass X pipe to remove the restrictive factory