No problems with resonance, and less "burble" on decel, but not eliminated. I use to get severe headaches on long trips in the corvette. I later figured it was the drone of the muffler giving me a migraine. I switched to Corsa Pace series and it helped a lot. Once the headers, cats, and x-pipe went in, a nice healthy rumble, but no more headaches. I love the sound!

I've been thinking of going to B&B PRT's. Chuck Mallett stated in his testing, they were the ONLY aftermarket cat-back system to actually PROVE HP gains! (albeit only 7 HP)! Should be considerably louder than what I've got. Everyone gives gobs of positive comments on how the car sound now!