Flowmaster or SLP???
 

Just wanted to see what your opinions were, on sound AND performance

Flowmaster super 40's?

or

Slp Loudmouth II

Look up each on you tube and decide which sounds the best to you. It's cool to have a system the everyone likes but it is more important to have the one you like.:)

people will say exhaust is all about sound and won't really help much with power, however I believe that it does a little bit and the more you mod the more it helps. With that said if your looking for a nice sound flowmaster isn't bad, but in my opinion it will do NOTHING for increased performance. Sound yes, performance no.

SLP is probably one of the best for performance, however some of their systems are just flat out annoying loud. The SLP LM1 should be freaking illegal it's so loud. I think the SLP LM II is a bit quieter and they also make a system with regular type mufflers that I haven't really heard in person.

I've always advocated for Magnaflow because I think you get a nice tone with added performance and a good quality system. I had magnaflow on my GT and Mach and really liked it.

Anyway, those are just my opinions, but go to www.mustangexhaust.com and listen to different combo's and figure out what you like.

neither. Hooker Aerochambers FTMFW!!!!!

slp's will make your car sound like satan... that can be either a good or bad sound depending on what you like. im a bigger fan of slps than i am of flowmaster. yet i love my mac

How important is drone listen here https://mustangboards.com/mustang/pi...ry.php/cat/508

i have flowmaster and love it but on a v8 NOTHING sounds better than bassani

anything other then flowmasters is my choice. And almost every other muffler flows better aswell.

love my lmII's

Go with the SLP's!!!

Up grade with stock! LOL

It's quiet!