2014 Summit Racing 2.5" dual kit

I was looking hard at those. The street pros are a chambered design and have reports of drone. The race pros are the quietest and are built like a magna flow or dyno max straight through, The violators are the loudest. I have read really good things about the Race Pro mufflers and the overall quality of the systems.

My goal was to have a a mild idle, little to no resonance, and a growl under throttle. I think the Race Pro system would have fit the bill for me, but I don't like the idea of sound absorbing material that degrades making the car louder as the miles tick away.