Quiet performance exhaust



I have a 16 s63 AMG coupè. Wife bought me the Renntech R1 for better gas mileage. I told her there is probably a quiet performance exhaust that would help with the mpg too.
She hated the Borla exhaust I had on my RSPEC sedan. She said the sound took the luxury appeal away
So does any one have a suggestion on a quiet performance exhaust or just leave the stock in place.
oh thanks Pat at Renntech, the post up here giving him praise are valid


