live4motocross11

i put on a Flowmaster American Thunder cat-back and i love the sound but its just not very loud. Now wat can i do to make it louder, i wanted to do a off-road h-pipe but i heard it hurts ur gas milage. i was also thinkin bbk shorty headers?? ne help is great
thanks

grabbem88

cut-outs

JeffUtica

Yeah, an H or X-pipe and definately dumps! I have an X-pipe and 2 chamber flow's and it's like night and day with and w/out tailpipes.

86 GT 5.0

cut out ur cats and weld a piece of pipe there

WHITESTALLION84

cut your cats and put some bbk shorty header and youll hear how loud they get

83gtragtop

Def. go with a o/r midpipe, the diff will be huge. I think the biggest thing you can do to change exhaust note is swap mufflers and the next best thing is an o/r midpipe.

86HOGT

More exhaust flow is not going to hurt you MPG. And with a mustang is it that important??

93 LX FiveO

if ur running cats thats why its not loud and if its the stock h-pipe u have 4 of them....

take them off and u will think its TOO loud

83gtragtop

exactly[sm=gears.gif]

7upedition

Off road midpipe and shorty headers, or you can get SLP loudmouths, midpipe is the bastard child of the stock exhaust family.