Hasn't your M4 a slip on but it gets rid of the cat converter blurr???Blurr wrote:mine is only 2hp off that and I only have a slip on2ndclasscitizen wrote:A guy on CanberraRIDERS has one with a full Akra Evo system and Haltech closed loop fuelling system, he made 175whp.
Welcome to the club by the way
