RTEC Motorsport de-cat.Allows exhaust gases to flow much faster, More power!Expect more popping & deeper aggressive exhaust sound. Gain 10bhp + (depends on spec of your car).This part is sold for motorsport and off road use only and will NOT be able to pass a UK MOT emissions test or police road side checks.This de-cat will also fit Volvo C30 T5.This de-cat will not fit with the standard Focus RS exhaust system, an aftermarket system will be required.