Whats up with this????

diesel · 12-22-2007, 07:00 PM

Hey guys. Ive noticed on all LBZ's weve owned the exhaust seems to surge or almost like its opening and closing. Listen to this video. Ours does the same thing that this truck does toward end of video. Anyone know why it does this?

YouTube - Straight Pipe LBZ at Idle

**ob_1jr** · 12-22-2007, 08:10 PM

I think it is because of the vanes on the turbo opening and closing.

truckmasterflex · 12-22-2007, 08:20 PM

yes it is the turbo, my buddy has an lly straight piped and it does the same thing.

diesel · 12-22-2007, 08:44 PM

why do they do that though? It can be idleing and it does it. Its kinda wierd. Especially when you have a loud exhaust.

diesel · 12-22-2007, 08:48 PM

be nice if it would stay open. it would whistle almost as loud as a PS 6.0 And why do the 6.0 whistle so much louder? Ive heard the turbo has a smaller outlet. Looks like smaller would mean less sound?