2011 GT w/ magnaflow competition cat-back HELP ! - Ford Mustang Forum
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post #1 of 5 (permalink) Old 11-21-2012 Thread Starter
chris288's Avatar
Joined: Nov 2012
Location: carmel
Posts: 28
2011 GT w/ magnaflow competition cat-back HELP !

I just picked up a 2011 GT Premium with 8K on it. When I test drove the car around town, I kind of beat on it and kept the revs high and it sounded GRRRREEAAAAATTTTT. unfortunately the night I took it home on the highway I realized it was fun for about 5 minutes, then the mind numbing drone followed by head-ache and sore ear drums, between 1,800 and 2,200 rpms and 65 mph highway speeds, lets not even talk about going up long hills in 6th gear,,, UGH ! long story longer, I climbed under the car and determined the previous owner put the magnaflow competition cat-back system on it. I called magnaflow for some help, all they said was they dont sell the street series muffles by themselves and they recommended I weld on some stainless universals.

I put an add in the classifieds to see if someone who had the street series mufflers wanted to go more aggressive and trade for the comps, but no dice.

I read the entire thread on the 1/4 wave attenuators and its sounded promising, but after looking under the car again, there doesnt seem to be any room for 2 25" pipes to be " T 'd " into the runners between the Cat and mufflers.

So I am undecided whether to spend 700 on the street series axle back and try and sell my comp series axle back, buy 2 magnaflow stainless universals for ~250.00 and have them welded on w/ new tail pipes. Will the street series knock down the drone to a bearable level ? would the universals be the way to go. I like aggressive but do 90 % highway driving and the drone is driving me :kooky:

I love the car but its driving me crazy...

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post #2 of 5 (permalink) Old 11-21-2012
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Location: Garden Grove
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I don't own any magnaflow products...but from what I've been reading on the forums...most of the mustang offerings drone...stick w/ Borla if you want to spend $700...high quality sound...no drone....

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post #3 of 5 (permalink) Old 11-21-2012
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The GT500 mufflers are what you should be looking for.They go for about $300 & I can vouch NO DRONE!

Do a search & some research!Then buy!

[FONT=Arial Black][SIZE=3][COLOR=navy]GT Premium Manual-Kona Blue[/COLOR][/SIZE][/FONT]
[SIZE=3][FONT=Arial Black][COLOR=navy]401A Int.-Char/Blk/W/Cashmere[/COLOR][/FONT][/SIZE]
[SIZE=3][FONT=Arial Black][COLOR=navy]Security Pkg.-3.73 Ltd Slip [/COLOR][/FONT][/SIZE]
[SIZE=3][FONT=Arial Black][COLOR=navy]Access Pkg #4 Hood Scoop N Ped Spoiler[/COLOR][/FONT][/SIZE]
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post #4 of 5 (permalink) Old 11-21-2012
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Location: Milwaukee
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If you want aggressive, don't go with GT500's or the Magnaflow Street series. The street series is definitely one of the most mild offerings on the market, much less Magnaflow. Sell the whole set if you can. I'd get Corsa Extremes or the Borla ATAK Catback. if you want aggressive. The Comp's resonators are slip joint so just an axle back system won't fit without welding because most all kits are sold as ball joint. Get two Pypes M80 mid mufflers and have them welded in the over axle pipes right before the mid pipe.
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post #5 of 5 (permalink) Old 11-23-2012 Thread Starter
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Location: carmel
Posts: 28
Are you saying to install the pypes m80 mid mufflers in my current system to knock out the drone ?
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