Mac catback
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TECH Fanatic
Joined: Oct 2006
Posts: 1,106
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From: POULSBO WA.
Mac catback Hey everyone, i am doing the 503 cam, and i found some mac headers. I also found that the lt1 loudmouth is discontinued. The Mac catback is still available for 299 shipped. They say 18 rwh, i have the flowmaster 80 series and i know its a choke point. My question is. Is anyone running the mac catback? How does it sound with a lumy cam? And is it worth the gain? Thanks
do you have the entire Flowmaster system or just the muffler?
I havent heard much if anything on the Mac system for fbodies but I had one on my old Mustang and it was a quality setup. Cant go wrong with them.
I havent heard much if anything on the Mac system for fbodies but I had one on my old Mustang and it was a quality setup. Cant go wrong with them.
Thread Starter
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Joined: Oct 2006
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From: POULSBO WA.
Just the 80 series mufler. Its gotta flow better than stock. But mac says 18 horse to the ground but that is probably over stock. So i gotta say mac could give me 10 over the 80 series mufler. But i want that lumpy growl without the continuos drone inside.
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Joined: Mar 2009
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From: RI
i had the MAC catback on my 95 z28. Not a bad setup at all, i cant really tell you about performance gains but with just a catback and CAI my 95 went 13.6 @ 101 consistently
I ended up swapping it out for a stainless magnaflow setup with 3" e-cutout, mainly for looks and cause i wanted to be loud
heres a quick vid of my car with the mac catback with Pacesetter LTs and ORY
http://www.youtube.com/watch?v=AonXO...ature=youtu.be
I ended up swapping it out for a stainless magnaflow setup with 3" e-cutout, mainly for looks and cause i wanted to be loud
heres a quick vid of my car with the mac catback with Pacesetter LTs and ORY
http://www.youtube.com/watch?v=AonXO...ature=youtu.be
Thread Starter
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Joined: Oct 2006
Posts: 1,106
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From: POULSBO WA.
That and a lumpy cam would sound really good thanks. Are u using the modified corvette fuel rail covers. Looks good! I tried it once and made a wrong cut and could never get it to look right, what kind of template did u use?
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I've got a flowmaster with the stock cat back and I have a manual cutout in place of the cat. At the track I only see a 1 mph difference between the two but that was before I did a cam change this winter.
You could keep the good sounding Flowmaster and add a e-cutout after the Mac header y-pipe and get better performance than the Mac catback for less money.
You could keep the good sounding Flowmaster and add a e-cutout after the Mac header y-pipe and get better performance than the Mac catback for less money.
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Joined: Oct 2006
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From: POULSBO WA.
True, i do get alot of compliments on the way the car sounds. And i like the agressive tone of the loudmouth. Sometimes i just feel like i need a change, flowmaster has been on the car 5 years. I wish they made a super 40 for our 1 in 2 out design. I hear alot of fricken mustangs with there aftermarket agressive catback and they think it just made them just so much faster wow lol bullsh@t, and they all sound the same too.
