Sweet Thunder or Moroso Spiral Flows?

Mattg · 01-05-2008, 08:57 AM

Just wanted to get some opinions on what others thought about these two true dual mufflers. Getting ready to order some pacesetters and an x pipe. I can't decide on which muffler to go with. I've looked on LS1 sounds and I think I like sweet thunders sound. My car is an automatic by the way. Cam soon to come this summer. Thanks for any input!

**Speed Psychosis** · 01-06-2008, 05:41 AM

I haven't heard much about spiral flows but i have heard only good about sweet thunders. here's a couple vids.

startup/rev
http://video.google.com/videoplay?do...arch&plindex=0

passing, burn outs, and in car
http://video.google.com/videoplay?do...arch&plindex=0

I'm going with them in the texas speed exhaust when I get my car.

**Wheeler99WS6** · 01-06-2008, 11:33 AM

I have the TSP true duals with Sweet thunder mufflers. Gotta say I love em. I havent personally heard the Moroso spiral flows either.

**WS6ICK2K** · 01-07-2008, 05:09 PM

Do most people run the x with dumps or over the axels?

**Speed Psychosis** · 01-07-2008, 05:13 PM

TSP is under. if lowering, over might be best. Its going to be louder for you if dumped. Also, imo a T/A needs it to come out the back since the bumper was designed for dual outlets.

**Wheeler99WS6** · 01-08-2008, 10:38 AM

Mine are TSP true duals dumped.

**JEB** · 01-08-2008, 10:14 PM

I would go over the axle with the dual pipes and out the back from under the bumper. Mufflers? I suggest straight through, MagnaFlows. They hold the noise down but flow like straight pipes.