Tested the Corksport Axle Back with a TotalFlow 7 inches resonator. This has a deeper growl than with Corksport with deleted resonator. Although deeper than the resonator delete you will notice the decrease in loudness. This will give you a stock like ride sound from 1K to 2K rpm. It will be loud at 2.5K and above rpm. Deep loud.
Here is a compiled sound bites of Corksport Axle back on a M3TH. Set-up involves with stock resonator, deleted resonator and TotalFlow 7 inches resonator.