2013 Mustang GT with stock then GT500 Mufflers - Page 2 - Ford Mustang Forum
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Originally Posted by C Green View Post
Just ordered my GT500s this morning from AM. I have been through a few ABs. I was avoiding GT500s because everyone has them, but I guess its time to see what all the fuss is about. My hushpowers did sound awesome, hope I don't regret swapping.
I had the same dilemma, but gave in and picked some up used for a great deal. The Roush with no cats was insane and I needed to tone it down a bit. Maybe everyone has the GT500s because they are just a good choice...


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As popular as GT500s are I really can't believe that some company hasn't copied them and maybe made the muffler bodies look a little better, but kept the same sound and internal design. Hmmm maybe this is one of those times when I have an idea and a month later someone gets mega rich, and I'm like "Hey that was my idea".


2012 GT Premium, 6spd, 3.73 rear, Steeda shift bracket, GT500 ABs, tint, matte black OTT stripe, Boss shift knob and boot, MMD taillight trim, Infinity speaker upgrade
Previous Mustangs: 91 Lx 5.0 404 rwhp, 93 notch, 98 GTvert slow as hell,99 Gt, 2000 GT, 2001 GT, all manuals and all will be missed, mainly the 91 she was sweet.
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Plan to install FR GT500 on my new 2013 GT. Sound perfect to me.

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Quote:
Originally Posted by C Green View Post
As popular as GT500s are I really can't believe that some company hasn't copied them and maybe made the muffler bodies look a little better, but kept the same sound and internal design. Hmmm maybe this is one of those times when I have an idea and a month later someone gets mega rich, and I'm like "Hey that was my idea".
The problem with that is the price. Nobody seems to have managed to design, build, and sell axlebacks for the cost of the GT500s. Most of the muffler deletes cost more!

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I recently did BBK aftercat X-pipe with Resonator Delete and GT500's and man....it sounds to good. You just drive around with the windows down and radio off. I won't ever change the exhaust and the GT500's being factory style mufflers will last for a long time.

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Quote:
Originally Posted by Napoleon85 View Post
The problem with that is the price. Nobody seems to have managed to design, build, and sell axlebacks for the cost of the GT500s. Most of the muffler deletes cost more!
I know.. I couldn't believe how much muffler deletes cost when I bought this GT. I wouldnt put deletes on the new..loud as hell..5.0 anyway, but who would pay that much for a piece of pipe.Just get some tips and have a shop fab them up for less than half that. Hell I know a shop that will MAKE you a custom full O/R Xpipe for $100.

2012 GT Premium, 6spd, 3.73 rear, Steeda shift bracket, GT500 ABs, tint, matte black OTT stripe, Boss shift knob and boot, MMD taillight trim, Infinity speaker upgrade
Previous Mustangs: 91 Lx 5.0 404 rwhp, 93 notch, 98 GTvert slow as hell,99 Gt, 2000 GT, 2001 GT, all manuals and all will be missed, mainly the 91 she was sweet.
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They are alot more subtle than aftermarket. It depends on what you want. For me they are a perfect blend of enough bark to know it's a V8 without having any of the teenager-with-first-hot-rod attributes like excessive blubbering on decel, drone or bellowing like a bull moose in rut.

2014 Premium GT, SGM, Brembo, Auto, Tech, Comfort, etc. GT500s, Steeda UCA, VMP auto tune, 100 shot on BBR tune, best et: 11.38 at 120.85

2012 GT, Candy Red, Brembo, 3.73, Tech, Comfort, etc. Procal tune, Roush upper, UMI LCAs, Steeda red bracket, GT500s, 28X10X16 Hoosier slicks, best et: 11.91 at 115.23 RIP
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These mufflers also come to the rescue of people who have long tube headers, no cats, and a wide open x or h pipe, and no resonators.. with that combination the stock mufflers sound like garbage and they also hiss like mad. the gt500's can handle the wide open race type exhaust system w/o going all cracky and crunchy (think popcorn in a tin can) and they dont hiss. Every other muffler that works is WAY to loud..
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Quote:
Originally Posted by jocatch View Post
Just had GT500 mufflers put on my car today by the local Ford dealer. First you can hear the stock 2013 Mustang GT mufflers at idle and drive-bys and then the GT500 mufflers. The GT500 mufflers here are brand new and will get louder after 500-600 miles as the packing ages. Too bad but it was windy when I shot the GT500 sounds so that diluted the sound somewhat. But you should hear that the GT500s are louder than stock but not as loud as Roush.

Joe C

2013 Mustang GT with stock and then GT500 mufflers - YouTube
Does anyone know for a fact that these are "packed" and if so, is it stainless steel mesh or fiberglass?

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2013 GT Premium Coupe - white (auto) 3-M Crystalline,factory 19”wheels, black rocker stripe/heat extractors, redline leather armrests & console Silverhorse qtr windows Polk & Infinity speakers,DYNAMAT EXTREMEGT500 A-backs
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Well, the stock mufflers don't have packing so, I'd assume the GT500s don't either. Packing and 100,000 mile durability testing OEM mufflers go through isn't a good combo.

2014 Premium GT, SGM, Brembo, Auto, Tech, Comfort, etc. GT500s, Steeda UCA, VMP auto tune, 100 shot on BBR tune, best et: 11.38 at 120.85

2012 GT, Candy Red, Brembo, 3.73, Tech, Comfort, etc. Procal tune, Roush upper, UMI LCAs, Steeda red bracket, GT500s, 28X10X16 Hoosier slicks, best et: 11.91 at 115.23 RIP
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Oem and gt500's are chambered non packing mufflers. Straight through designed mufflers are ideal for flow. I'm running ORX with these race bullets in T304.

Surprisingly not bad for fairly open exhaust. Nice pick up in power over 5k rpms with my CJ setup versus the oem mufflers. I would have gone gt500 if they had not almost doubled the price on them. Bought these shipped for 270.
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This tends to be one of our favorite setups because you can still do Long Tubes and have a great sound that is not too loud. We are getting to old here at the shop to have super loud cars!
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