Audi RS6/RS7 (C7 4.0tfsi) hi-flow catted downpipes

These downpipes have been designed specifically for the Audi C7 RS6 and RS7.

With the o2 sensor located in the correct position allowing for accurate tuning and safety,

These are fully stainless steel with heat shields to reduce engine bay temperatures lower than the original parts. This is achievable both by reducing back pressure and adding the heat shields. 

These remove both primary catalytic convertors and will require ECU remapping ( tuning )

To remove the secondary catalytic convertors you will need to order new mid-pipes.

These are usually removed when running an aftermarket exhaust like milltek for example 

Main benefits of keeping a high flow cat.. no bad smells when the car is idling, reduced chances of fumes entering the cabin, the exhaust note and note is much cleaner without the screaming sound associated with fully cat less, will pass wof in NZ, will pass emissions test provided the engine tune is not running rich