- Does NOT fit RS3 RS5 RS6

If you replaced your stock exhaust with an aftermarket exhaust this plugs into the wiring harness that goes to the muffler exhaust valves and eliminates the soft error code that appears when the valve is removed/disabled.

You can also disconnect the valve in the open position on your stock exhaust and plug this in to run open all the time.

- This fits

Audi S3 S4 S5 S6 S7 RS7 SQ5 A8 S8 that have 3 wire exhaust valves from factory.

- Does NOT fit 4 pin connector on

RS3 RS5 RS6