I can take a video of it tomorrow for ya. (it's on my 13' Silverado, not a gmt 400 but it should sound the same)
On my 2004 I had it turned down under the bed and at certain rpms the drone would make my head explode.. It was literally painful.
On my truck dumped in front of the rear tire it doesn't drone it's just more audible when going from V8 to V4 mode.
Another option also is no mufflers at all. On my 91 ECSB I originally had a Gibson cat back system (single In dual out to the rear bumper) which wasn't loud enough so I just took out the muffler and had it straight piped w/the cat and it sounded awesome. Now if was straight piped and short it might not have sounded good but running all the way back it was perfect.
I'll post the video tomorrow for ya, hopefully the audio does it justice.
Sent from my throttle body injected galaxy note3
On my 2004 I had it turned down under the bed and at certain rpms the drone would make my head explode.. It was literally painful.
On my truck dumped in front of the rear tire it doesn't drone it's just more audible when going from V8 to V4 mode.
Another option also is no mufflers at all. On my 91 ECSB I originally had a Gibson cat back system (single In dual out to the rear bumper) which wasn't loud enough so I just took out the muffler and had it straight piped w/the cat and it sounded awesome. Now if was straight piped and short it might not have sounded good but running all the way back it was perfect.
I'll post the video tomorrow for ya, hopefully the audio does it justice.
Sent from my throttle body injected galaxy note3