Thought I would share my latest upgrade in case anyone may have interest in a free flow exhaust system that will not rattle your brain. (2006 Ram 2500 Cummins 5.9)
At 20k miles I installed a Magnaflow 5" catback exhaust system, performance intake, K&N filter system to turbo, and a superchips programmer. I wanted more power but also wanted to keep the EGT's down.
This system has worked great but the drone has been terrible. I added sound deadner throughout the cab and it made the truck quieter but did none eliminate the drone.
I have heard a lot about the Corsa muffler and drone canceling technology (sounds to good to be true). Now at almost 170k miles I could not take it anymore and ordered the Corsa muffler alone.
Summit shipped it pretty quick with no problems. I took it out of the box and noticed it was straight through design. In fact, it looked to be almost a straight pipe in it with strategically placed holes going into the muffler chamber. I could not believe it and almost did not install it (did not think it would work). Long story short, I installed it to the existing Magnaflow tailpipe. Could not believe it, no drone at all (gone)- all I can hear is the valves and the turbo! I can live with that...
Two thumbs up for Corsa