Exhaust Components E46 M3

 AA E46 M3 Signature Performance Exhaust


Active Autowerke BMW M3 Exhaust E46


Designed specifically for the E46 BMW M3 exhaust system, the all-stainless Active Autowerke Generation 6 is our most innovative cat-back exhaust to date. Its precision-tuned straight-through design with in line resonators offers an incomparable combination of power, sound and styling. Well suited to both naturally aspirated and supercharged vehicles, this new and revolutionary BMW M3 Exhaust design employs inspired pipe routing and optimum diameters to enable the Gen 6 to literally unleash horsepower without restrictions. Sporting the same classic 80mm tips like the earlier versions, everything else about the Gen 6 is new. It’s lighter, stronger and more robust with a distinct sound unique to the generation. Does it work? You bet it does. Performance gains of 5-7 peak rear WHP can be expected. Is it really that free-flowing? Comparison dyno tests were run on an E46 BMW M3 with no rear exhaust vs one with the Gen 4 system installed. Zero power loss was measured with the Gen 6 in place. Like we said, this thing is practically invisible! But you can sure hear it. Just listen for the rich, low frequency tone at idle to moderate RPMs. And the distinct, robust sound at higher RPMs validating Gen 6’s superb performance characteristics. Sporting a newer, more rounded look; an aerodynamic fit; high-polish finish and quad 80mm straight tips, this rig is considered by many enthusiasts to be the sleekest, most aggressive exhaust around. Installation is simple, utilizing all the stock mount points with no rear valance mod required. Combined with our BMW M3 Sport Header, you can build the ultimate BMW M3 exhaust!


Key Features:


-Quad 80 mm stainless steel tips

-Polished 100% 304 stainless steel

-Distinct & Robust Sound

-Proven to support over 600+ HP

-Dyno-Tested & Proven

-Large inlet pipes with resonators

-Illustrated instruction manual

-Two year limited warranty with free tech support

-Easy bolt-on installation

Price: $1,499.00

 E46 M3 Rasp-X pipe

AA Rasp Terminator w/Cross-over for 2001 to 2006 BMW M3




The Rasp Terminator with Cross-over pipe (the RTX) is the 4th generation of Rasp Terminator. The original Rasp Terminator was developed by Custom Performance Innovations to solve the single most complaint heard among BMW M3 owners - the exhaust rasp noise. This hideous exhaust noise is emitted from any 2001 to 2006 BMW E46 M3. There is nothing wrong with the engine, it's just a matter of physics - a combination of high compression, variable valve timing, and cylinder head exhaust port design that causes a high-pitched, metal-rattling sound (i.e., the rasp) that is very loud and noticeable when the engine is revving at or above 4,000 rpm. The front section of the exhaust system - also known as section 1 - is where this high-pitch rasp noise emanates and is the best location to terminate it.


The RTX is a direct replacement for the original section 1 and it not only completely eliminates the rasp, you can expect 3 to 5hp increase as well as a 2 to 4 ftlb increase in torque!


It is made from 2.365-inch mandrel bent, 304 stainless steel (16 gage), with a polished 304 stainless steel resonator. The RTX uses a cross-over to balance exhaust pressure which results in improved throttle response and "sound wave cancellation". The two straight-through performance resonators completely and permanently eliminate the rasp while allowing for a free-flowing exhaust. The stainless steel flanges are TIG welded for strength and durability.


Price: $595.00

 AA E46 Signature Headers

Active Autowerke BMW E46 M3 Header


The Active Autowerke BMW E46 M3 Header is designed to increase exhaust flow without losing power which can sometimes be a tricky proposition. These headers are developed to create optimum flow and eliminate restriction that rob much desired horsepower. Following the famed BMW E46 M3 CSL headers, each individual header runner of the Active Autowerke header is cut to a matched equal length to ensure a consistent exhaust scavenging (tolerance in lengths vary by bends to a mean average of 10-20mm).

They are suitable for naturally aspirated and supercharged forced induction applications, Active Autowerke’s BMW E46 M3 Headers are made out of 100% 304 stainless steel, making durability a worry of the past.

Are they difficult to install? Absolutely not! Robust exhaust flanges with recessed mounting holes make it easy to install. If you can turn a ratchet, you’ll be on your way to increasing horsepower.

The factory exhaust catalysts are removed in the process, making this solution recommended for off-road applications. Add on our BMW M3 Software Tune for even more power!


note: designed for off-road usecar will have CEL without Active Autowerke Software Upgrade for Off-Road use


Key Features:


-Creates optimum flow and eliminates restriction

-Matched equal length runners delivers a consistent flow 

-Dyno Tested to provide improved HP and torque gains

-Polished 100% 304 stainless steel construction

-Designed for Street and/or Track Use

-Bolt On Design with Precise Fitment

-OEM Style fitment

-Illustrated Instruction Manual

-Two year warranty


Price: $1,900.00

 Race Flow E46 M3 High Flow Cats

Race Flow E46 M3 High Flow Race Cats


Race Flow High Flow Race Cats are made from Mandrel Bent 304 Stainless Steel. Bolt directly up to stock headers or AP racing headers.

Great alternative to the pricey SuperSprint cats.

+20hp when combined with Euro E46 Headers.

Utilizes stock O2 and EGT sensors. FIts all 2001-2006 E46 M3s


Price: $1200.00