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The performance exhaust system is designed to reduce back-pressure to almost half of the stock levels through a combination of specialized muffler shapes
Quality Titanium Construction
High Quality Product
Performs and sounds better than any "straight-pipe" system
compared to weighty titanium which are a typical 17 grams per shim
PTG Motorsport M177/178 Race Valve 812 GTS The performance exhaust system isAs an integral part of producing high horsepower in your M177 178 AMG, our Motorsport Race Valve provides exceptional sealing against high boost while releasing pressure off throttle. This allows for much better transient throttle response as well as safety to your turbocharger. Complete with all hoses and fittings, this is a bolt on solution. Complimenting our PTG 1000 and PTG X systems, this product removes the factory electronic valves which have
