Review on Enhance Your SUV's Performance with Flowmaster 53057 3 In(C)/Out(O) 50 Series Muffler! by Robert Wood

If you're looking for something that doesn't bother you in the cockpit, look no further! I had a Super 40 with my previous truck and it was too loud for me on the freeway in the driver's cab. I just put a Super 50 on my 2010 Silverado 5.3 and it is exactly what I was looking for. The freeway traffic is very quiet, but when you step on the gas it actually sounds like it's got steam!