Reflection design mufflers, such as the Flowmaster Outlaw and Outlaw II types, are largely used in racing apps. The reflection style mufflers use especially put “rings” In the muffler that offer the sound attenuation. Backpressure is due to the engine's valves relocating in all sorts of routes and colliding and https://www.truckspares365.co.uk/hub/hgv-exhaust-silencers/