I picked the 540i up on Wednesday night, the same night I dropped off my X5. I had to wait for my X5 to get the rims powder coated back to the original color before I could pick up the 540i.

I loved the original rumble my 4.6is had, but I wanted more. I really enjoyed pulling up to a light and flooring it just to hear that sound. I think the 540i is going to sound great with the resonator removed, not to mention it'll add a little more horsepower. Nothing dramatic, but a little.