05 Ricky

I just installed my mac axel back and these things wont seal worth a damnDoes any one have this problem? I hate to have to weld them[:@]

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2004 Torch Red Mach 1, 5 speed, Flowmaster cat back, Steeda front sway bar, Steeda UCA's, Steeda UDP's, PHP/Steeda High Flow air box

06stangGT

i hope i don't have that problem...mine are in the mail coming to me!

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2006 GT 5 Speed

-not stock

Twister

see? all the people saying MAC is crap have our reasons....

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my ex-wife asked me to sell my 86......my current wife bought me 24# injectors and a hood

svt93style

Call them I am sure they will replace them.
Not sure how that could happen....what kind of gap are we talking about here?

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2006 Tungsten Grey, 5spd, IUP, Factory 18's Bullets, Corsa's, Steeda Ultra-Lites.

jcovercash

Ok heres the deal.

MAC mufflers are NICE. High quality mufflers, and sound great!
BUT.....
Their clamps SUCK!


The best thing you can do is go get a set of 2-1/2 U-clamps from your local muffler shop (under $10 for a set). Replace the MAC clamps with these, HOWEVER do not over tighten them, they will crimp the mufflers onto the over axle pipes if you get them too tight and you will have trouble removing the mufflers if you ever need to.

They look similar to this.



Josh

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2006 GT Premium, Leather, IUP
Tunable Induction w/ 93 Octane Tune
Mac Axle Back Mufflers

GTlust

The ford racing axle backs are hard to get a good seal. I had to reposition the clamps several times. If all else fails you could try some exhaust tape around the pipe before putting the mufflers on, that should help it seal, but not sure how long it will last.

viking396

What jcovercash said, bar none they will do the job, the MAC clamps are dainty little things meant for dainty little mufflers, which the MAC's are not. Doesn't make sense it's like to departments decided on them and the idiots won.

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Vortech V2-SQ Supercharger
60' 1.769
1/8 7.901@90.15
1/4 12.20@113.50 - new best! 10/13/07
Best 1/4 on stock KDWS tires = 12.56@113.3
My 2006 Mustang GT Web Page

viking396

The MAC's aren't crap, the mufflers rock, it's the clamps that suck... I also haven't been seeing the MAC's are crap threads...

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Vortech V2-SQ Supercharger
60' 1.769
1/8 7.901@90.15
1/4 12.20@113.50 - new best! 10/13/07
Best 1/4 on stock KDWS tires = 12.56@113.3
My 2006 Mustang GT Web Page

Twister

look in the 5.0 section....

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my ex-wife asked me to sell my 86......my current wife bought me 24# injectors and a hood

howyhowy

I had a problem with my ford racing axel backs, the clamps were of a good quality but I think they were just a hair too big. I cranked them down to a bit over 35ft-lbs but they are still loose enough that a good tug could pull them out.
-howy

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2007 RedFire MGTvert Man Premium - C&L CAI,
XCAL2, Borla Stingers (FRPP)
20-60mph2ndGear = 5.02sec
1999 Durango: stock-o-matic