Active Autowerke Sports GESI cats for BMW M2C / M3 / M4 S55 MOT / Track friendly
If you're looking at this then it's likely you already know the brand and exactly what these are! For sale is my Active Autowerke S55 Sports cats - These are the Bugatti of sports cats for the M2 M3 M4 nothing else comes close, period. The quality in materials especially the GESI G-Sport 400 cell cats precious metal substrate is incredible. They are a significant upgrade over the standard cats - Unlocking acceleration and power potential. I had these fitted to the car for less than 1000 miles, in that time they have been faultless, some facts: These will fit a standard car or one with stage 1 / stage 2 mapping without an engine light coming on These will pass MOT emission tests in the UK These will pass sound tests in the UK even if you exhaust is straight through These do sound amazing, giving a deep tone with no rasp Only reason for sale is decided to take my car in a very different direction.
Cores and fittings are in perfect condition. Some very minor marks on the outside of the pipework due to fitting. I originally fitted these to get the sound down of my exhaust which was obnoxiously loud and failing static sound checks at my local track, with these on passed no problem whilst still sounding great both inside and outside the car, not to mention no more smell from being catless before, winner.
Below is detail pulled from their site, any questions please ask. A pair of 4 ultra high flow GESI catalytic converters (Gen 2 Advanced) that will NOT produce a CEL! The GESI G-Sport High Output Catalytic Converter features full 304.
Stainless steel construction, including the substrate. GESI HO-Series Gen 2 Catalytic. Converters are EPA registered and compliant in 49 states and fully OBD2. Compliant, perfect for use on 1996 and newer vehicles. Precious metal loading technology ensures greatly reduced emissions, eliminating.
These ultra high flow catalytic converters outperform. Stock converters and provide a reliable solution to the most common catalytic. The GESI HO-Series Catalytic Converters are rated for engines putting out between 500 and 850 horsepower each while maintaining a high flow capacity. The reduced back-pressure from this ultra high flow catalytic converter will allow you to maximize your engines horsepower without the harmful emissions. Say goodbye to Check Engine Lights and failed emissions tests! NO CEL for catalytic efficiency when using this downpipe. Quicker turbo spool and response. Less restrictive, more free flowing. Improved low end and mid range performance as well as higher boost levels.GESI EPA registered high flow and fully OBD2 compliant. Casted upper stainless steel V-Band for precise fitment. Can reach operational efficiency within 9 seconds of startup. Easily bolts-on with no cutting or welding required. Accepts OEM O2 sensor heat shield.
Durable construction from TIG welded 304 stainless steel. Ultra high flow 400 cell per square inch catalyst. 304 stainless steel substrate is furnace braised to the mantle for outstanding durability. GESI proprietary precious metal loading technology ensures greatly reduced emissions.
Ideal for Forced Induction Applications with no loss of HP. Both passengers and drivers are safe from harmful emissions and noise.