Euro Sport's downpipe for the MK5/MK6 and Audi A3 2.0T is constructed of tig-welded 16-gauge 3" mandrel bent T304 stainless steel tubing. A 3" stainless steel Hi-Flo (400 cell count) catalytic converter is built-in, three stainless steel oxygen sensor fittings, and a stainless steel OE style 8" long flex joint into Euro Sport's design. The connecting flange is ‚3/8" thick laser-cut stainless steel. Dyno tested to give you a gain of approximately 10-12 WHP and 15-20 WTQ. This is a bolt-on two piece design, and downsizes to fit the stock system or Euro Sport's 2.5" performance exhaust system. Backed by a 6 month warranty against manufacturing defects and workmanship. Note: Some vehicles may have a check engine light with this downpipe because of the high flow catalytic converter, this may be resolved with ECU programming. * NOTE: DUE TO C.A.R.B. RESTRICTIONS, THIS ITEM IS CURRENTLY NOT FOR SALE IN CALIFORNIA. Fitment: MK5 GTI 2.0T FSI Engines 06-09 MK5 GLI 2.0T FSI Engines 06-09 MK5 JETTA 2.0T FSI Engines 06-10 MK6 GTI 2.0T 10-13 MK6 GLI 2.0T 11-13 Audi A3 2.0T FSI Engines 05-12 **Front wheel drive cars only**