what is the best sounding axle back muffler for a 4.6 GT


Asked by Apr 20, 2012 at 01:28 PM about the 2009 Ford Mustang GT Premium

Question type: General

8 Answers


depends on your personal opinion. If you want just a good all around sound Borla would be the way to go in my opinion. but if you want it to sound bad ass then SLP loudmouths.


wife has an 05 mustang gt with the a magnaflow exhaust, sounds awesome!!! not to mention scary quick

1 out of 1 people think this is helpful.

For the price, sound, and quality, Flowmaster is one of the best.


Personaly im not a fan of flow master. they run at extreme temps. which causes them to rust from the inside out. you dont know it until one day the back falls off of it. "This is From Personal experience" on multiple versions of flow masters. What ever you get you will be better off with stainless. might cost more in the begining but in the long run you will be happy you did.

3 out of 3 people think this is helpful.
Best Answer

iwould say 3 inch flowmaster


40 series flowmaster all the way and yeas 3inch cat back!!!! Make her talk!!!!!


i just bought slp loudmouths for my 2010 gt which is the last year they used 4.6's and it sounds the best and even my buddies with flowmasters say theirs dont sound as good as the slp axle backs do

2 out of 2 people think this is helpful.

magnaflow cat x-pipe with magnaflow free flow mufflers, with a diablo tuner and a free flow intake, really opens this pony up. scary fast and still gets 26 mpg on the highway (if you can keep your foot out of it 05 mustang gt.......

1 out of 1 people think this is helpful.

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