PROFILE

The ARM Audi A3 Downpipe / VW Golf Mk7 Downpipe is an essential upgrade if you're looking to get the most from your Gen 3 EA888 equipped A3.  The stock downpipe is built with a dense catalyst that hinders exhaust flow on your EA888 engine, causing higher back-pressure, increasing turbo lag and causing your turbo to work harder. 

Replacing your OEM downpipe with the ARM Audi A3 Downpipe / VW Golf Mk7 Downpipe will significantly improve exhaust flow, reducing the back-pressure generated by your turbocharger.  The result of the increased exhaust flow is faster turbo spool, increased power and torque, and a nice improvement in exhaust note.    

In addition, the improved exhaust flow will allow you to run increased boost targets found with Stage 2+ tuning software.  Attempting to run Stage 2+ tuning files over 25psi with the stock downpipe can put excessive stress on your turbocharger and is not recommended.  Most tuners require an upgraded downpipe to run their more aggressive tunes. 

The installation of catless downpipes will result in an inevitable check engine light (CEL) as the DME will detect that emissions are not being burnt up by the OEM catalyst. To remove this CEL without having to tune it out we offer the CEL Delete Kit which is comprised of O2 sensor spacers specifically calibrated to comply with BMW's parameters for a functioning catalyst. These install into the post-catalyst O2 sensor bungs, effectively removing the CEL that would otherwise appear.

CONSTRUCTION

Made of TIG welded T304 grade stainless steel, the ARM Audi A3 Downpipe is designed to fit your Audi A3 perfectly.  The ARM Audi A3 Downpipe is constructed of a single piece design.  This solid-unit construction eliminates the exhaust leaks and installation issues commonly found with it's multi-piece downpipe counterparts. 

The laser-cut mounting bracket and CNC machined mounting prongs make for a precise fitment to your stock downpipe mounting points.  

The ARM Audi A3 Downpipe kit comes with both a 2.5" reducer to connect to the stock exhaust system, and a straight 3" adapter to connect to upgraded cat-back exhaust systems.  This connection utilizes a CNC machined v-band system for connecting between the downpipe and adapter of your choice.  The v-band is a superior connection type compared to a slip-fit or bolt on connection as it maintains a more study and reliable seal between the two ends.  

The ARM Audi A3 Catless Downpipe comes with a single 4" Resonator as standard on our catless downpipe to improve exhaust sound.  This resonator is a straight through design, it does not block exhaust flow as the resonator is only around the downpipe, not inside of it. 

If you're looking for a catted downpipe, we offer a catted version which incorporates a 200 Cell High-Flow Catalyst in place of the 4" Resonator. 

The ARM Audi A3 Downpipe incorporates a stainless steel flex section between the turbo and mid-pipe mounting point.  The addition of this flex section reduces tension on the turbocharger caused from torsion during hard acceleration, cornering, and braking. 

The ARM Audi Catless downpipe gives you an immediate improvement in turbo spool, power and torque.  Pairing the ARM A3 Downpipe with a proper tune will yield gains up to 60whp and 105wtq on the stock IS20 turbocharger.

FITMENT GUIDE