I put a Loudmouth setup on a friends Mach 1 and kept the old mufflers his car had on it (Flowmaster 40s). I was wondering what you guys opinions would be of using these on my true dual setup since they are free to me. I know they don't flow as well as most, but considering I'm not putting down whopping amounts of power, and would have true duals with long tubes, how bad would I be hurting myself?

 

I ran 40s, then glasspacks, now the sweet thunders. Honestly my dyno numbers were all about the same.

I can say the 40s sounded the best, with a nice growl all the way across the board. The sweet thunders do have a bit more of a bullet sound up top.

 

I'm using 40's on mt TD setup. I have probably exactly what you are looking to do. LT 2.5 TD to the axle with 40's. It sounds really nice however I have noticed that they pop alot on decel if you are not trying to control it. I'm not sure if its because I have all of my emissions equip off or if because the FM just do that on setups not pushing alot of HP. WOT though, they really do scream.

~Jim~

 

Yeah Jim thats exactly what I'm doing. Longtubes, 2.5 x pipe, no cats or emmissions, flowmaster 40s dumped at axel. Thanks for the help!