20must03gt

Hey i have a 2003 mustang gt and the kid before me put on an exhaust manafold. It sounds good but i want louder i think im going to put the SLP Loudmouth II or flowmasters which one should i choose and will it improve my sound since i already have a exhaust manafold?
Thanks for your help.

Js 99 GT

That kid was a real dumb sh*t cause they come from the factory with manifolds on them already. Are you meaning headers? Long or short? I prefer flows, but its all opinion.

red2k1gt

Your comparing 2 very different mufflers there...LM's are going to be louder but the sound is very different. Go to www.mustangexhaust.com and listen to a lot of clips and decide what you like best.

djb1187

flowmasters have a wayyyy better tone IMO but the SLPs will be loud as hell if u want that

20must03gt

w

99mustanggt

If you like the sound of a car backfiring than get slp's.If you like a loud car that still has a great tone get flowmaster 40's.

20must03gt

ok

y2kStangGT

how can i tell if the car has a stock exhaust or aftermarket?
and what kind if it's an aftermarket?
it's obvious that this is my first mustang.
i have a 2000 GT.

Jaybird79

Go with Flowmasters, they sound better than the Loudmouths.

20must03gt

dude i didnt know either my car didtn sound like a stock gt at all so i got under it and the muffler thing said flowmaster so i guess thats what i got i would really like to talk to the kid who owned it before me. u should try that or get under it or take to a mechanic