Welcome to the forums, beautiful car!
To answer your question, yes it’s definitely possible.
For dual outlets on both sides, you’ll need a new diffuser. The standard S5 will fit or even aftermarket one.
Secondly, you’ll be lucky to find a pre configured quad exhaust for the TDI models... more than likely a custom exhaust for yourself.
Thirdly, if you can’t fit the quad outlet due to adblue tank, then you can remove it and get a adblue delete software. Someone in this forum has already done the quad exhaust you mentioned with adblue delete.
Word of warning, cars that come with adblue tanks, which later on gets removed and caught can see hefty fines and ofcourse your car not being allowed on the road.
So really it’s up to you to decide whether it’s worth the looks or not in this case 👍🏻
~Alex
To answer your question, yes it’s definitely possible.
For dual outlets on both sides, you’ll need a new diffuser. The standard S5 will fit or even aftermarket one.
Secondly, you’ll be lucky to find a pre configured quad exhaust for the TDI models... more than likely a custom exhaust for yourself.
Thirdly, if you can’t fit the quad outlet due to adblue tank, then you can remove it and get a adblue delete software. Someone in this forum has already done the quad exhaust you mentioned with adblue delete.
Word of warning, cars that come with adblue tanks, which later on gets removed and caught can see hefty fines and ofcourse your car not being allowed on the road.
So really it’s up to you to decide whether it’s worth the looks or not in this case 👍🏻
~Alex