Description
Elevate your BMW E9X M3 exhaust system with the Active Autowerke GESI Ultra High Flow Cats Upgrade, designed specifically for use with the Signature X Pipe. This upgrade is perfect for those who want to eliminate the check engine light (CEL) without tuning, while also meeting EPA emission standards. These catalytic converters feature GESI’s advanced G-Sport technology, ensuring reduced emissions and improved performance without sacrificing horsepower.
This system is a true bolt-on solution with no cutting or welding required, and it’s compatible with most aftermarket exhaust systems. The GESI high-flow catalytic converters are crafted from 100% 304 stainless steel and are built to withstand high temperatures up to 1500°F. Each unit is rated for engines producing 300 to 500 horsepower, and it can efficiently reach operating capacity within 9 seconds of startup.
In addition to offering improved emissions control, the Active Autowerke X Pipe system delivers impressive performance gains, with a boost of 12+ RWHP when used with the Active Autowerke Signature Exhaust and 10+ RWHP when paired with the stock exhaust. This system also offers weight savings, weighing only 30 lbs compared to the factory system’s 40 lbs. With durable construction and precise fitment, this upgrade is ideal for M3 enthusiasts looking to maximize power while remaining emissions compliant.
Key Features:
- No CEL for catalytic efficiency when using this downpipe
- 10+ RWHP increase
- GESI EPA-registered, high-flow, fully OBD2 compliant
- Casted upper stainless steel V-Band for precise fitment
- Rated for 300 to 500 HP per catalytic converter
- Withstands up to 1500°F
- Reaches operational efficiency within 9 seconds of startup
- Bolt-on installation with no cutting or welding required
- 400-cell per square inch ultra-high-flow catalyst
- EPA-compliant for use on OBD2 vehicles (1996 and newer) except in CARB states (California)
- 304 stainless steel construction with TIG welding
- Weighs less than 30 lbs versus the factory system’s 40 lbs
- Covered by a 5-year/50,000-mile warranty on the shell and tube ends, and a 2-year/25,000-mile warranty on the catalytic core (subject to terms)
Fitment:
- 2008-2013 BMW E90, E92, E93 M3 models
- Designed to pair with the Active Autowerke Signature X Pipe
Important Notes:
- Federal law prohibits tampering with emissions control devices. The GESI catalytic converter is EPA-compliant but not CARB-approved, and is therefore not legal in California.
- Warranty is void if your car has excessive burble (greater than stock), as this can damage the catalytic core.
