Honestly, it was probably something I could get used to, but I made the mistake of adding a resonator. In the past, a resonator usually did a great job in taming a droning exhaust.

But with the Crossfire, the issue is that the resonator has lowered the resonance to just the right frequency to cause my interior/trim to rattle and shake, which is frankly 10 times worse than just the drone alone. I could remove the resonator, but for the money, it will likely be more cost effective to slap on a 60 series delta flow and call it a day.