udi TT Quattro FSI/TSI. High Flow Racing 3" downpipe assembly for K03/K04/GarrettMild350HP Turbos and ATP Stock location turbos up to 500HP. Fits transversely mounted Quattro (AWD) 2.0L FSI equipped Audi TT (2009 model tested), 304 stainless steel with gasketless/aircraft 3" stainless steel V-Band connection. Includes racing cat delete rear section (can be replaced with cat module later). Bolts directly to stock exhaust joint. All CNC mandrel bent and CNC flanges. TIG welded assembly. A must have mod for any "chipped" or "reflashed" vehicle to easily gain big HP and Torque. Over 30 ft/lbs and over 30WHP @ various parts of the power graph. V-Band system will be fully compatible with future V-Banded rear exhaust modules that will extend rear muffler and exhaust tips. Various "hot swappable" muffler, catalyst, and resonator options for power and sound tuning will be available to attach to this downpipe. All easy to install.