Active Autowerke Signature X-Pipe with GESI Cats – BMW M3 (E9x)

OVERVIEW

The Active Autowerke Signature Track Pipe with X-Pipe and connecting pipes for the BMW E9X M3, supplied here with GESI G-Sport ultra high flow catalytic converters. Engineered to work with most aftermarket exhaust systems and mufflers as a true bolt-on with no cutting, welding or modification, it improves on the factory X-pipe design with a scavenging effect and saves a great deal of weight — 25 lbs against the factory system's 40 lbs — for gains of 12+ RWHP on Active Autowerke's Mustang chassis dyno alongside their Signature exhaust system, or as much as 10+ RWHP with the BMW stock exhaust. Its two 4" high flow GESI converters will not produce a CEL: proprietary precious metal loading greatly reduces emissions, while the reduced back-pressure lets the engine make its power without the harmful emissions.

SPECS

• Two 4" GESI G-Sport Ultra High Output catalytic converters
• 400 cell per square inch ultra high flow catalyst
• 100% 304 brushed stainless steel construction
• Increase of 10+ RWHP with the stock BMW rear exhaust
• 12+ RWHP measured when combined with the Active Autowerke Signature exhaust system (Active Autowerke Mustang chassis dyno)
• Weighs less than 30 lbs versus the factory system at more than 40 lbs
• Catalytic converters rated for 300 to 500 horsepower per cat
• Cast upper stainless steel V-band flange for precise fitment
• TIG welded 304 stainless steel construction; catalyst substrate furnace-brazed to the mantle
• Withstands up to 1500 °F
• Reaches operational efficiency within 9 seconds of start-up
• No check engine light when using this X-pipe
• GESI converters are EPA registered and fully OBD2 compliant for 1996 and newer vehicles, except in California and other CARB states
• Bolts on with factory style flanges — no cutting or welding required
• One year standard Active Autowerke warranty on exhaust products
• Catalytic converter warranty: 5 years / 50,000 miles on the shell and tube ends and 2 years / 25,000 miles on the catalytic core, original purchaser only; void if the car has excessive burble (louder than stock)
• Made in Miami, Florida

PARTS INCLUDED

• Active Autowerke Signature X-Pipe (100% 304 brushed stainless steel) with connecting pipes
• Two 4" GESI G-Sport ultra high flow catalytic converters
• Cast upper stainless steel V-band

TECH RESOURCES

Additional Parts Required

• None. Active Autowerke specifies no additional hardware for this part — it bolts to the factory style flanges and works with the stock rear exhaust or most aftermarket systems that use factory style fittings.

Installation

• Active Autowerke catalytic converter break-in instructions (PDF) — follow this procedure on first start-up to avoid a check engine light being set in error.
• Active Autowerke does not publish an X-pipe specific installation PDF for this part number. Speed Logic offers professional installation — contact us to schedule an install.

Notes

• Please Note: These catalytic converters are not legal for use on vehicles registered in the state of California as a result of California Vehicle Code Section 27156 and 38391.
• NOTE: Federal law prohibits the tampering of an emissions control device. Mobile Source Enforcement Memorandum 1A allows for aftermarket parts to be used in the repair or replacement of emissions control systems, provided the emissions are not adversely affected. There is no mention or reference to cell density or converter volume dimension. The GESI catalytic converter will produce emissions that will meet the standards set by the EPA, not CARB.
• Fitment shown covers the E9X M3 range. Confirm your exact chassis and model year with Speed Logic before ordering.
• Optional pairings in store: Signature Rear Exhaust for E90 / E92 M3, Signature Rear Exhaust for E93 M3 Convertible.
• Alternative catalytic converter specifications: Signature X-Pipe with Active AFlow cats (11-018A) or the Signature X-Pipe without catalytic converters (11-017). Already own the X-pipe? Add the GESI cats upgrade (11-083) or AFlow cats upgrade (11-083A) instead.

PART NUMBER

• 11-018

VEHICLE APPLICATIONS