offroad x-pipe or h-pipe for 01 Cobra

[BAD PNY]

Tom as usual your remarks are spot on. Put MAC headers on a 4 valve and you will start consuming vast amounts of oil. The welds are lousy and their exhaust is at the bottom quality wise. I installed MAC headers and an off road pipe on my friends SS and could not believe how rough the welds and inside of the headers were.

If I can afford a cobra I want the best exhaust products out there. JBA, Bassani, Borla,etc. It is my personal opinion (based on being around here sometime).

01Silverstang I don't know who you are. I do know MAC products are at the bottom of the food chain. Tell me 1 experienced modular shop that uses them ?

[Mr. Ed]

Yes, it would be ok if it were stainless. Perhaps that would elevate the quality to "high-end" aftermarket. At whatever "end", I'm sure enjoying some "cheap thrills" laying down the noise! My MAC O/R pipe is ceramic-coated which provides a degree of durability. The price was $186.58 with shipping from Year One located in Tucker, Ga. outside of Atlanta. They are one of our vendors and sponsors as well. A great group of folks very helpful over the phone OR in person when I visited their booth at the April Food-Lion Auto-Fair this year.

[smashedheadcat]

The only MAC product i've ever had is the PRO-CHAMBER that was installed on my cobra when i bought it. It was paired up with flowmaster 40 series cat back. It sounded very tough. I've since scrapped that combo for the BBK longtube/shorty O/R H-pipe and borla combo. Anyway, all i can say is that MAC's pipe looked better than the BBK H-pipe i've got now.........

[blown92gt]

I do not like Mac, I've had tried a their systems a couple times thinking I would get a good fitting set and they all fit terrible. Of course these have all been on a fox body car but from what I've seen from my experience and my friends I would never buy anything from Mac again.

[01silversnake]

Well, anyway. I guess I'm just one lucky guy with the quality that I've gotten from Mac with both my Mustangs I"ve owned. How weird lol. The mac cats back system that I put on my 2001 cobra i put on in my driveway in about 25 mins. totally time. It was a true fit system in my case. I sorry to hear of all your guys problems with these systems.

[akatherazor4]

Well I just installed a Mac O/R H-pipe on my 01 Cobra. It was an easy install and fit perfectly. Combined with the 2 chamber flows it sounds great, Very loud with a deep rumble to it.
So far my check engine light hasn't popped on either.

I am considered a pretty anal person when it comes to my car. I chose the Mac due to past experience, Looking at other cars with one, And price. I have yet to see or hear of any problems with them.

I'm sure there may be better quality out there but at what cost? With a better quality H-pipe would you expect more H.P., Enough to justify the increase in cost?

Just my .02

Razor.

[JAYSLOSTBOYZ]

I HAVE A 99 COBRA W/FLOWMASTER AND BBK X PIPE CATLESS,ITS
LOUD BUT SOUNDS VERY RADILY CRACKY,NEED TO CHANGE,MY CATBACK SET UP,BUT I DONT WANT TO UPGRADE TO SOMETHING
THAT WILL SOUND THE SAME,OR I'LL PUT MY STOCK H PIPE BACK ON. WILL A COLD AIR INTAKE SOUND ANY DIFF OR SAME???
ANY ONE RUNNING 99 AND UP COBRA WITH 4.10'S WHAT KIND OF
QUARTER MILE TIMES ARE YOU GETTING-THZ BR3

[01silversnake]

Well, I just ran my car at the track this passed wednesday and went 12.91 at 106 on Kumo's spins some. My mods are Mac off road h pipe with MIL's, Mac cats back, Wms cold air kit, Diablo sport Delta 4 bank chip problem(secret program lol) and 4:10's. Just redynoed at 306.6 hp and 301.1 torq. to the rear. Dynoed twice that day. Once with a cool down( just showed up and with right on the dyno) and pumped out 303.4 with 298.2 torq. Not to bad. Cant wait until I redyno with the Steeda pullies( with I just put on today in the driveway) , JBA shorty headers and a pro-m87 and some more chip reburning and dyno tuning. THey were saying it should be in the range of maybe 320 to 330 hp to the rear. I can only hope........

[JC]

I'm with Tom Crews on this one.

Mac = Low end poorly engineered products.

I tried more than my share of exhust combinations in a few vehicles I've owned and so far, and MAC is dead last as far as quality and engineering. Heck, MAC would be last competing against themselves.

Thanks in part to MAC, I'm the proud owner of a new SHM motor on my 97 Cobra... Take it for what is worth, but if MAC was the only company around then I would choose to keep my cars stock...

JMHO,
JC
97 Vobra

[smashedheadcat]

Thanks to vortech, i have a SHM shortblock....... Should i be upset, or happy??? I'm happy with it. Actually, my car failed the "leak down" check before any mods. MAC can't be thaaaat bad.. Can they???

[smashedheadcat]

Originally posted by tcrews
On the mod motor cars it really depends on the type of mufflers you have if an H or X offroad pipe will sound well.

Offroad H pipes work well with the stock mufflers and chambered style mufflers (flowmasters, mac, etc..).

Offroad X pipes work well with straight through mufflers (Bassani, Borla, etc...).

Catted pipes (X or H) work well with just about any muffler type.

I guess this goes against anything i've read, but i'll just toss this out there. I've got BBK longtubes, BBk shorty O/R-H w/mils, and Borla Side exit exhaust. This is the most incredible exhaust note i've ever heard come out of a mustang. I've had soooo many compliments about the sound of it. I've changed a few people's opinion about side pipes. There is zero "cackle" with this set-up. No popping, very tame sound. Hit the gas, and this girl screams. Impossible to explain, but it's a wonderful sound. I'd recommend it to anyone. What i'm getting at is.... The H-pipe for me is working magnificently with the straight through design of borla's....

[JC]

Smashedheadcat

You can believe what you will about MAC products. Please continue to give them your money if you'd like, and while you're at it you should install some MAC LT's on your car too..... Trust me, shortly after that you may be the owner of a second SHM engine... Don't take my word for it please...

Have fun !!!

[smashedheadcat]

Originally posted by JC
Smashedheadcat

You can believe what you will about MAC products. Please continue to give them your money if you'd like, and while you're at it you should install some MAC LT's on your car too..... Trust me, shortly after that you may be the owner of a second SHM engine... Don't take my word for it please...

Have fun !!!

That was mean.

Anywho.... I don't have anything from MAC on my car. I honestly don't plan to have anything MAC on my car. I'm not avoiding MAC in any way, it's just there is better stuff out there. I'm not going to put their long-tubes on my car. Sure won't. I don't need them. I will say this though. NOTHING is wrong with their catback exhaust. Not a thing. They don't offer stainless steel........ Honestly, stainless steel wasn't the reason i bought my exhaust. If someone wants the sound of chambered mufflers..... then i'd recommend MAC to anyone. It's a different sound than the flowmasters, and probably will last a little longer than them too. I'm not a fan of MAC, but i don't despise anyone that uses their stuff.

[smashedheadcat]

Hmm.... as i scratch my head, it may have just come to me that you (JC) are one of the guys i've read about. **I'm not mud-slinging btw** Me putting two and two together, came up with the possibility of your 4V cobra falling victim to the MAC long tubes. If that's the case, then i send you my gratitude. That right there gives you a reason to hate MAC and their products i'm sure. Obviously, they've got a problem with their longtubes on the 4V's....but honestly, i haven't seen anything but satisfaction from their h and x pipes as well as the cat-backs....... My only personal expirience with MAC was the Pro-chamber that was on my car when i bought it. It seemed to be alright in my eyes, welds looked good, and it put out a decent sound. What else can i say...???

[tcrews]

Yep, JC lost his engine due to Mac longtubes. His car was running perfectly and the day he put the Mac LT's on he started having oil-starvation problems. He kept the Mac LT's on for a month or so and finally replaced them with BBK LT's. Unfortunately it was too late by then. One SHM engine coming up!!

The problem is this has happend to 99% of Mac LT (4V DOHC) guys, supercharged or not.

I'm sure their H-pipes are decent and their cat-backs are fine, it's just their overall quality is below pretty much ever other exhaust manufacturer out there. I've only heard bad stuff about their headers......for every year car (5.0, 4.6, etc..), have heard of premature rusting/rotting of thier exhaust pipes and for me that was enough.

To each his own......but if someone is going to recommend a product there will be others to recommend against that product (and to state the reasons why).