Rovel

There are so many exhaust mods for W211 E63 that folks could debate for hours as to which one is better. Add personal taste and preference to the mix and you could argue for even longer. One of the viewers of AccentOnCars decided to do a resonator delete — a very popular setup. But even with that, some will substitute H-pipe or X-pipe for the resonator. The owner of this particular car decided to straight-pipe the resonator. Perhaps it causes a slight back-pressure loss, but you wouldn't notice daily driving. I think it sounds pretty good and was quiet when cruising.

Personally, I am considering removing the secondary cats and putting straight pipes in their place. Will report back on that too.