About 6 months ago I pulled the stock muffler on my crew cab 6.0 chevy and installed a dual in dual out super 40. Now the truck sounds sweet but the interior resonance is about to drive my passengers nuts. Any ideas on mufflers that will still have a good deep tone but wont drive you nuts going 60 on the highway??

My buddy put a magnaflow on his and it still sounds good, but is not too loud in the cab. Is the exhaust dumper or is it running out of the back of the truck?

Right now I have 2.5 inch out to 3.5 inch tips turned 90 degrees behind the tires on both sides.

You might give Magnaflow a shot.

I would hate to throw money at it and not be any better. I love the way it sounds outside but drives me nuts inside.

earplugs

Ill pass