Sunset01

Don't know if this was the case with stock exh. manifolds & y-pipe, but now, after doing headers and custom catted Y, I notice that the right tailpipe is much louder than the left tailpipe. Anyone else notice that?

Dal1as

It's normal. The muffler has the intlet on 1 side and the 2 outlets on opposite sides. The right side does a very small turn and out that's why it is louder. The Magnaflow setup for the LT-1 was different as you can see in the pictures on the Magnaflow websight. The inlet was on 1 side and both outlets on the other with the right side having to curl around the back of the muffler. The LS-1 setup is why it is so freaking loud at WOT but quiet at idle.

boomcase

Ditto ,

Sunset01

cool. The right tailpipe does most of the exhaust work at idle and low rpm I guess.. when the backpressure starts to build/HP, I guess the left side comes more into play. THanks