Integrated Engineering Performance Catted Downpipe

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IE B9 A4 & A5 Performance Catted Downpipe
The IE catted downpipe is the perfect solution for those looking to add performance to their Audi A4 & A5 B9 (2017+) 2.0L. Expect horsepower gains as well as an aggressive sound. In addition, motorsports engineering and quality materials translate to a long lasting and quality product. You will not be disappointed!

Excellent horsepower gains of 21.8HP - with a plug-and-play tuning box
Cast sections ensure maximum flow and gorgeous fit and finish
True 76mm Throughout- Does not neck down to OE Sizing at catalyst discharge
76mm tubing replaces the restrictive 65mm factory tubing
Direct bolt-on fitment - no modification or bending of mount brackets required
100% 304 stainless steel pipe construction - lifetime of worry free performance 
Thick cast turbo flange - ensures long gasket life and no leaks
High flow 200 cell catalytic converter - full power with reduced pollution and no exhaust smell
High quality metal matrix catalyst flows more than cheaper ceramic matrix cats
Tuned resonator - keeps highway drone to a minimum
Fully lined extra tough flex section will never collapse internally
Kit includes - Downpipes, midpipe, all mounting hardware (nuts, bolts, clamps, gaskets)
Install instruction can be download by CLICKING HERE

The IE B9 A4 & A5 Catted Downpipe works to reduce turbocharger back pressure and increase power. In turn, turbo spool should increase and with a performance ECU tune you will unlock the performance potential of your car.  Experience power gains across the entire RPM range as the exhaust emits an aggressive sound that you are bound to love.

All IE exhaust systems are designed in-house using state of the art digital scanning for a perfect fit and manufactured from thick wall 304 stainless steel offering a lifetime of performance and fun.

Installing the IE 3" catted downpipe on your B9 A4, A5, or Allroad 2.0T engine, you can expect huge power gains of +20-25HP when installed with a Stage 2 ECU tune or plug-in tuning box (this can vary by brand).  Click on the Power charts tab for more performance info and dyno graph.

IE engineers elected to use a resonator in the B9 A4 & A5 exhaust. The result was a much better sounding exhaust overall. The factory cat back has a very unpleasant rasp when used with a downpipe which does not have a resonator. As IE engineers are true enthusiasts as well, it was very important that the exhaust also sounded great.  Check out the video to hear stock vs. IE sound clips.

IE’s performance downpipe includes a high-flow 200 cell per inch metal matrix catalyst located as close to the turbo as possible. Metal matrix catalysts are higher performance because the matrix web is thinner, allowing higher flow in the same size. Our catalyst is also a very large diameter, allowing a large flow area and maximum power. By being placed close to the turbo, emissions and unwanted unpleasant smells are greatly reduced.

The IE downpipe replaces over 6 feet of restrictive factory exhaust tubing, all the way back to the OE “Cat Back” rear section. Sturdy fabricated mounts and precise engineering result in a rattle free and long last replacement exhaust system. 3D scanning systems were employed to ensure perfect placement both in pre and post production phases.

Audi - B9 A4 2016+ with 2.0T engine
Audi - B9 A5 2016+ with 2.0T engine
Audi - B9 A4 Allroad 2017+ with 2.0T engine

For CA Proposition 65 Warning: Click Here

More Information
Part NumberIEEXCK1
BrandIntegrated Engineering
Filter by Type of PartDownpipes
Select Your Engine2.0L
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