Mac or Magnaflow Exhaust - Ford Mustang Forum
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post #1 of 19 (permalink) Old 07-31-2007 Thread Starter
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Mac or Magnaflow Exhaust

I have a 90 GT and need to get an H pipe with cats. Whats everyones opinion on Mac or Magnaflow, the Macs are quite a bit cheaper is there a real differnece between the two with quality and what about fit has anyone had problems installing either. Thanks.
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post #2 of 19 (permalink) Old 07-31-2007
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I personally think the Magnaflows are a better quality. Mac does good products for inexpensive costs.. I think the Magnaflow (or other brands) with premium mandrel bends would be a better choice.

Just a heads up, a lot of these topics have been discussed in great detail.. please try our search button to prevent double threads.
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post #3 of 19 (permalink) Old 08-01-2007
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A mandrel bend is a mandrel bend. I put MAC on my Cobra and LX with no regrets or fitment problems. Why pay more for something no one looks at. The MAC's sound every bit as bad as anything out there. Save your money and spend the extra on future mods.
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post #4 of 19 (permalink) Old 08-01-2007 Thread Starter
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Thanks Snake that was what I was thinking.
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post #5 of 19 (permalink) Old 08-01-2007
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"A mandrel bend is a mandrel bend." Negative. Order Summit's mandrels VS. Holley bends.. The summit bends have obvious line where the bend begins.. It depends on who makes the bend.
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post #6 of 19 (permalink) Old 08-01-2007 Thread Starter
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Does that apply for Mac and what does a line in the bend mean. Is it weaker?
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post #7 of 19 (permalink) Old 08-01-2007
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I have Magnaflow with long tubes and no cats. I love the way it sounds. It sounds much different than any other 5.0 around here. But I worked for a place that was a magnaflow dealer when I bought it so I got a great deal.

1993 GT Hatch: 306 with Twisted Wedge heads,TFS stage one cam,TFS upper/lower intake, 190lph fuel pump, 30lb injectors, 70mm TB/EGR plate, Granatelli MAF= now using Pro-M, Lakewood upper/lower control arms, powertrax diff, subframe connectors, Eibach springs, aluminum ds, t56 trans, Eibach swaybars, Flowtech LT's, Magnaflow CB, 17x10.5 deep dish cobras in rear, 17x9 cobras in front.

Marine Detachment, Keesler AFB, Biloxi MS
OOORAAHH!!!
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post #8 of 19 (permalink) Old 08-02-2007
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I have no "lines" in my MAC mandrel bends. A mandrel bend leaves no lines. If you want to feel better about spending more for a product that performs no better be my guest. The primary reason for increased prices of exhaust products is stainless vs. aluminized and brand name glitter.
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post #9 of 19 (permalink) Old 08-02-2007
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on my MAC cat back the design was VERY good and all the bends are extremly nice, no lines or anything, and they sounds pretty dam good with the stock h-pipe, no one looks under my car because it sits to low to the ground so i have aluminized, stainless is a waste of money because no one sees it, but i do have chrome tips that look very good

New addition: 1986 GT t-tops 5.0L 5speed, intake, exhaust,9mm plug wires

1987 Mustang LX 5.0 5-speed,white with smoke grey interior,MAF conversion,Perfection clutch(valeo)2.5inch Ravin exhaust, subframe connectors, ported lower intake & heads=SOLD
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Well stainless will last longer than aluminized will.

1993 GT Hatch: 306 with Twisted Wedge heads,TFS stage one cam,TFS upper/lower intake, 190lph fuel pump, 30lb injectors, 70mm TB/EGR plate, Granatelli MAF= now using Pro-M, Lakewood upper/lower control arms, powertrax diff, subframe connectors, Eibach springs, aluminum ds, t56 trans, Eibach swaybars, Flowtech LT's, Magnaflow CB, 17x10.5 deep dish cobras in rear, 17x9 cobras in front.

Marine Detachment, Keesler AFB, Biloxi MS
OOORAAHH!!!
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Ive got Magnaflow & love it.Ill never have to buy another exhaust since its stainless.

1992 gt 306 4 wheel Baer disc,BBK cont arms,magnaflow exh,h-pipe w/ high flow cats,Griffen alum rad,Motorsport shorties,Crane Fireball ign coil & box,B-303 cam,K.B.hyper pistons,heat treated chamfered knife edge & bal crank,Spec stage 1clutch w/ firewall adj 24 lb inj w/ pro-m maf, cobra intake,gt-40 heads & so on
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Stainless will last longer but I'm not sure if the cost benefit analysis works out. How many times will you have to replace your aluminized before it cost more than the initial cost of stainless? Also in theory we all love our stangs but in reality most are traded off for a newer one or a family car before even aluminized wears out. The Walker dynomax mufflers that used to be on my LX were over 10 years old and still worked fine. I just decided to replace them. The choice is much like women, all men have their preferences. Do whatever floats your boat.
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post #13 of 19 (permalink) Old 08-02-2007 Thread Starter
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Thanks everyone I appreciate the input.
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I've got a Magnaflow catback, (been on since November) and the last time I was under there, it looked like there was surface rust on the pipes. The rest of my system is Mac - headers, H-pipe. I think Mac makes decent stuff. My previous catback was Mac, and it had been on the car for well over ten years - in the rust belt of Ohio. It did finally wear out, but I'd give any Mac product a try.

'88 GT convertible, 5 speed, 3:08 gears, A9L Mass Air conversion. Mac shorty headers and H-pipe, Magnaflow catback.
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This is a little off topic but I am building a 351 based twin turbo setup for another car. Would you guys stick with 2.5" exhuast or 3"? Im not just talkin about the catback, I mean the whole exhaust.

1993 GT Hatch: 306 with Twisted Wedge heads,TFS stage one cam,TFS upper/lower intake, 190lph fuel pump, 30lb injectors, 70mm TB/EGR plate, Granatelli MAF= now using Pro-M, Lakewood upper/lower control arms, powertrax diff, subframe connectors, Eibach springs, aluminum ds, t56 trans, Eibach swaybars, Flowtech LT's, Magnaflow CB, 17x10.5 deep dish cobras in rear, 17x9 cobras in front.

Marine Detachment, Keesler AFB, Biloxi MS
OOORAAHH!!!
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