APR Exhaust Valve Remote | MK7 R · 8V S3 · MK3 TTS E53 X5 48is 4.8L V8 [N62] Optimized tuning of the intake

Optimized tuning of the intake manifold runner lengths

Extensive engineering and testing have produced an unrestricted exhaust with an exhilarating symphony of engine sound without annoying rattles

Horsepower gains of 8-12 HP

The material that the components are made from is very critical

APR Exhaust Valve Remote | MK7 R · 8V S3 · MK3 TTS E53 X5 48is 4.8L V8 [N62] Optimized tuning of the intakeThe APR Exhaust Valve Remote lets you override the factory exhaust valve operation to fully open the exhaust valves at the press of a button. Simply plug and play and press "ON" to open the valves fully. To return to the original behavior, press "OFF" and the valves will operate as if the device wasn't installed. This system works with both the factory exhaust and the APR Valved Catback Exhaust System. Features: Opens the factory exhaust valves