i have a 2006 gmc 2500hd crewcab 6.0

just put the Dynomax Performance 39378 exhaust on and it sounds great but it drones so bad in the cab,anyway to eleminate it or atleast help some?

thanks!!!

 

bumps

 

The magnaflow is known to drone at certain rpms and is quite annoying. I'd personally replace just the muffler with something like a dynomax superturbo as it is reasonably quiet and flows well. Your other option would be to add in a resonator which will help some with the drone, but don't expect any miracles.

 

a while back i had found an an online article about how wrapping the muffler helps with the drone. Check out post #16 on this link

 

Stop the Drone - Helmholtz Style - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com

Some information here on a Helmholtz device. I have yet to try it, but it looks promising.

https://www.performancetrucks.net/fo...-drone-489463/

Read this above as well.

 

thanks guys awsome info!

 

****** eh! I asked on there as well something that has been kicking my *** on the truck for sometime.

 

just gotta get a mandrel bent u to get this project moving..i will post up before and after.

 

Cool. Im interested to see how it works.

 

Ended up sending the whole system back for a full refund. Cheaper than trying to fixit and not knowing if it would work