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Cat replacement pipe

At Turbo-parts.de you can find high-quality catalytic converter replacement pipes! Made from robust stainless steel, they offer improved exhaust gas flow and increase performance. Ideal for tuning projects, they ensure higher performance and a sportier sound. Perfect for anyone who wants to take their vehicle to the next level!
Cat replacement pipe
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Catalytic Converter Replacement Pipes for Audi and Skoda 1.8T & 2.0 TFSI: Maximum Performance in Motorsports

In competitive motorsports, every millibar of exhaust backpressure can mean the difference between victory and defeat. Anyone looking to extract the absolute maximum from legendary Audi engines such as the 1.8T (20V) or the modern 2.0 TFSI / TSI (EA113 & EA888) will quickly reach the performance limit with a stock catalytic converter.

A high-quality catalytic converter replacement pipe (decat pipe) completely replaces the restrictive stock catalytic converter and ensures an unimpeded exhaust flow directly after the turbocharger. Especially for performance-tuned race cars and extreme turbo conversions, this upgrade is the key to maximum efficiency and thermal relief.


The Advantages of a Catalytic Converter Replacement Pipe in Motorsports

Removing the catalytic converter core offers tangible mechanical and thermal advantages in racetrack and motorsports applications:

  • Drastic reduction in exhaust backpressure: The turbocharger no longer has to force the exhaust gases through the dense honeycomb structure of a catalytic converter. The result is extremely free-revving of the engine and a noticeable increase in torque and horsepower.

  • Noticeably faster response (spool-up): Thanks to minimal resistance, the turbocharger spools up significantly sooner. The dreaded “turbo lag” is minimized, giving you valuable tenths of a second when accelerating out of corners.

  • Significant thermal relief for the turbocharger: In stock form, the catalytic converter traps enormous amounts of heat directly at the turbo outlet. Without this heat buildup, the exhaust gas temperature (AGT) drops drastically. This protects the turbocharger from cracks in the exhaust housing and preserves the entire core assembly (shaft and bearings).

  • Consistent performance under sustained load: Thanks to cooler combustion and optimal exhaust flow, cylinder filling remains consistently high even during long track days or endurance races. A thermally induced drop in performance (knocking) is effectively prevented.

  • Unfiltered racing sound: Acoustically, the replacement pipe ensures the engine sound is fully unleashed. The typical “turbo hiss” and the dynamic soundscape of the 1.8T and TFSI engines come through unfiltered.


Perfectly matched to Audi & Skoda 1.8T & 2.0 TFSI engines with an ECU tune.

Our replacement catalytic converter pipes are precisely designed for the flow dynamics of the two most popular Audi engine generations:

  • Audi 1.8T (e.g., in the Audi TT 8N, A3 8L, S3 8L): Creates space directly behind the K03 or K04 turbocharger. Perfect for upgraded turbochargers and displacement increases that generate enormous volumes of exhaust gas.

  • Audi 2.0 TFSI (e.g., in the Audi S3 8P/8V, TTS, A3 8P/8V): Optimized for modern direct-injection engines (EA113 with timing belt and EA888 Gen. 3/Gen. 4 with chain). Here, the unobstructed flow provides noticeable relief for the vulnerable exhaust valves under extreme boost pressures.

Important motorsports note: Catalytic converter replacement pipes do not have any type approval (ABE or parts certification) and are intended exclusively for use in motorsports (race tracks, closed events). Use on public roads is not permitted.