There is a little devil sitting on my shoulder whispering tales of upgrades for my Sparkling Graphite e92 M3
He is thinking a new exhaust system.
You Guys that have tried out a few, which systems are recommended? "Most sportcar sound"? Lightest weight? Enabling highest performance increase etc.? I know the answers of these questions are of the subjective art, however, I would be great full for any thoughts, experiences, ideas etc.
With that said, I would definitely be interested in 2nd hand business suggestions!