Decat/Downpipe for Passat TDi

The THS Tdi downpipe/decat is designed to replace the existing restrictive catalytic converter in your Audi/VW 1.9Tdi. It will significantly increase turbo spoolup speed and increase bhp output. The Downpipe is constructed of T304 Polished Stainless Steel and features a flexi-joint to allow sufficient movement between the engine and exhaust system. All bends are produced using a CNC Mandrel Bending machine. This ensures that there is no ovaling of the pipe. TIG welding is utilized on flexi and flange joints for superior strength.

The downpipe/decat has a 63.5mm (2.5") diameter outlet connection which can be used to connect to an aftermarkert 63.5mm exhaust system. However we have incorporated our modular exhaust adaptors which we found to be very popular on some of our other downpipes systems. The modular system comes with 2 adaptors which can be used to allow you to connect the downpipe/decat to the 2 sizes of standard exhaust found on the 1.9TDi Models. You will need to shorten the decat when using this option but we also supply another adaptor which allows you to convert the decat back to a 63.5mm size if you upgrade your exhaust at a later date.

Fits the following models

VW Passat 1998-2003  1.9TDI 90-110Tdi, 115PD, 130PD