Airtec Motorsport 3" De-Cat Pipe for Volvo C30 T5 2.5 turboAllows exhaust gases to flow much faster, More power! Expect more popping & deeper aggresive 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. Please note that using a de cat may cause the check engine light to come on, ideally a de cat should be used with a remap to avoid this problem