034Motorsport High Flow Catalytic Converter (A4/A5 B8, 2.0T)

This 034Motorsport high-flow catalytic converter for Audi A4/A5 B8 is designed to replace the restrictive OE catalytic converter, and allow for quicker spool while increasing horsepower and torque throughout the powerband.

034Motorsport constructs them from 304 stainless steel tubing, and utilizes a high-performance 250-cell stainless-steel-matrix cat. These high-flow cats 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. Full 3.5" tubing is used at the turbo outlet, with a smooth transition to 3" after the cat.

Complete drop-in upgrade; will bolt up to any stock/stock-fit turbo and stock/stock-fit exhaust. Professionally assembled by 034Motorsport, TIG-welded and backpurged.

• Full 304 stainless construction.
• TIG welded and backpurged.
• CNC machined flanges.
• Factory correct oxygen sensor and exhaust hanger placement.
• Dyno proven horsepower and torque gains!
• Smog tested.

Gains of over 24WTQ and 27WHP have beens seen on 034Motorsport's dyno on stock turbo tunes.

Direct bolt-in for OEM cat-back exhaust, or aftermarket cat-back exhaust systems designed to fit with the OEM catalytic converter. Will fit Quattro and FWD B8 Audi A4/A5 2.0 TFSI models equipped with manual, Tiptronic, or CVT transmissions.

Please Note: Installation gasket and hardware kit and oxygen sensor spacer available as options below.

Gasket & Hardware Kit - We have pieced together all of the necessary parts to make swapping out your factory catalytic converter a breeze. This kit includes turbo outlet and cat-to-midpipe gaskets, as well as all necessary nuts and bolts for a complete install.

Oxygen Sensor Spacer - This spaces out the secondary (rear) O2 sensor to remove MIL or CEL issues caused by removing the factory catalytic converter. Professionally manufactured from stainless steel, not cobbled together by hand like some other products on the market. Spacer will add approximately 1.7" to the height of the sensor. 034Motorsport oxygen sensor spacers feature a flare seal seat, so no sealing washer or gasket is required.