034Motorsport B8 S4 3.0T FSI test pipe downpipes are designed to replace the restrictive OE catalytic converters, and increase horsepower and torque throughout the powerband. These downpipes were developed to stand up to the rigors of Grand-Am racing, and used on the APR Motorsport B8 Audi S4 3.0 TFSI.Our downpipes are constructed from .109" 304 thick wall stainless steel tubing, and designed to eliminate the factory catalytic converters entirely. They feature CNC machined flanges to prevent warping and expansion, factory-correct exhaust hanger location, and 2 oxygen sensor bungs in the proper locations for the factory sensors. Professionally assembled in-house, TIG-welded and backpurged.These downpipes are a complete drop-in upgrade, and will bolt up to any stock/stock-fit exhaust manifold and stock/stock-fit exhaust. Features:
Gasket & Hardware Kits - We have pieced together all of the necessary parts to make swapping out your factory catalytic converter a breeze. This kit includes exhaust manifold outlet and cat-to-midpipe gaskets, as well as all necessary nuts and bolts for a complete install.Oxygen Sensor Spacers - These space out the secondary (rear) O2 sensor to remove MIL or CEL issues caused by removing the factory catalytic converters. Professionally manufactured banjo-style spacers machined from stainless steel.
FOR OFFROAD USE ONLY!
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