anyone have a Flowmaster 40 Series on their 6.0l hummer...I am just looking at changing the Muffler and not the whole system...Looking for some sound Clips or info on how you like that Muffler..a friend of mine has one on his GMC Truck...but he has the 4.8L engine on his...would there be a Big sound difference......

 

I'm interested in hearing feedback on this also...sounds like cheap mod that in addition to adding some sound should save some weight...

 

for sure..i would love to hear what it sounds like with just the Flowmaster 40 Series Muffler on....Hope someone has an answer for us...

 

I don't have the 40 series, but the flowmaster 10 series dual exhaust. The rig rumbles pretty good. Here's a clip:

YouTube - 2008 Hummer H2 SUT Flowmaster Series 10

 

Sounds nice... Wish you reved it up a little! :-) btw nice Viper!