I have a G56 Exhaust - and love the deep sounds it makes. And at speed it is loud but not too loud. And it makes the throttle response a lot better. I think it is honestly one of the best upgrades you can do to let the motor actually breath.
I recently had a chance to drive a M3W with a stock exhaust and air filter - and compared to my car with a S&S Stealth air cleaner and the G56 - the throttle response on my car was much crisper and quicker.
The owner of the stock M3W drove my car.... and came away with the same conclusion: He said you push the gas on his car and "it thinks about going for a bit and then decides to actually get moving." On my car his seat of the pants assessment was he pushed the gas and "it was time to go NOW!!!" with such purpose and conviction that it put a large grin on his face. He went away convinced he needed to order a G56 and I went away confirming I would never be going back to the stock exhaust.
Hope this helps JohnMat. DM me if you want to chat about the G56 on the phone. Cannot say enough good stuff about it.
