Mac H-Pipe: Awesome

spitfirees20 · Apr 29, 2007

Great buy, works with my flowmasters very well The only problem was in the install, took 5+ because the passenger side lower header bolt was completely frozen and had to be torched right off, and then we had to rig up another bolt in its place Only $133 with no shipping from http://www.lmperformance.com/4568/50.html , also should mention it was a very good fit. Overall, very good product.

Demonoid · Apr 29, 2007

i just got the o/r h pipe installed today and i left my stock mufflers on and she sounds nice...got that and a tune really woke my car up!!!!!!

CobraRed_96_GT · Apr 29, 2007

get an exhaust vid up!

spitfirees20 · Apr 29, 2007

CobraRed_96_GT said:
get an exhaust vid up!

Sorry, it took so long to install it was almost dark by the time we got it running

zcs626 · Apr 29, 2007

i have that same H pipe, and yes it was a ****** to put on. sounds good though.

Mossberg · Apr 30, 2007

spitfirees20 said:
Great buy, works with my flowmasters very well The only problem was in the install, took 5+ because the passenger side lower header bolt was completely frozen and had to be torched right off, and then we had to rig up another bolt in its place Only $133 with no shipping from http://www.lmperformance.com/4568/50.html , also should mention it was a very good fit. Overall, very good product.

That same bolt for me was the most stubborn bolt I've ever dealt with. It took a couple tries with the impact wrench after stuggling with hand tools for a while.

Dusstbuster · Apr 30, 2007

Sounds like the same thing my car had happen to it with the Prochamber install. Took the shop 8 hours to do it on the lift, I can only imagine how long it would have taken us with it on jacks in the driveway.

flyboy86 · Apr 30, 2007

I don't feel so bad anymore. When I installed my mac o/r h, I sheared off the driver side stud. Spitfirees, how did you "rig up another bolt"? I still have only one stud holding on the driver's side, and it leaks like a mofo.

four six · Apr 30, 2007

Yup I hate that bolt too.

+2 for clip of exhaust

SamMan · May 1, 2007

I have the same setup. I get many compliments. Classic old school sound.

AmBo · May 1, 2007

I wish emmisions weren't an issue for me and/or Mac made a catted H. I'm sure the prochamber woulda been nice.

spitfirees20 · May 1, 2007

flyboy86 said:
I don't feel so bad anymore. When I installed my mac o/r h, I sheared off the driver side stud. Spitfirees, how did you "rig up another bolt"? I still have only one stud holding on the driver's side, and it leaks like a mofo.

We took the torch and melted out the old bolt, creating a hole roughly the same size as the stud that was in there. Then we took a bolt, put it through the back of the hole, and treated it like a stud. The one thing we did on the back was use a locking washer and rough up the inside of bolt a little so it would hold long enough for the impact gun to tighten it up. Hope that makes sense

merc123 · May 1, 2007

Mine took 5+ because my driver's side bolt was the same way. Had to torch it to get it out after it broke off. Good thing I did it at my mechanic's shop and his son helped me get it out.

Twista · May 1, 2007

flyboy86 said:
I don't feel so bad anymore. When I installed my mac o/r h, I sheared off the driver side stud. Spitfirees, how did you "rig up another bolt"? I still have only one stud holding on the driver's side, and it leaks like a mofo.

rofl, you bet it leaks. How the hell do you drive that car? Prob. sounds like ass+smells like ****.

and o/r pipes own. Its not even a PITA like alot of people said B/C once you get under there more than 3 times undoing and redoing it looking for leaks you get the hang of it and can do it alot faster the 4th, 5th or 6th time.

98GTfromGA · May 12, 2007

I have the car on jackstands in my garage and I can't get any of the damn studs off. I tried so hard that I broke an 18mm socket I still can't get it off....doesn't seem like there is room to get an impact in there

Twista · May 12, 2007

98GTfromGA said:
I have the car on jackstands in my garage and I can't get any of the damn studs off. I tried so hard that I broke an 18mm socket I still can't get it off....doesn't seem like there is room to get an impact in there

some people recommend a breaker bar.

Spray the nuts down with pb blaster and let it sit for like 30 minutes.. than try.

98GTfromGA · May 12, 2007

yeah i put some pb blaster on there, i was using a 3/8" breaker bar but I can try the 1/2"...I need to get a 1/2" socket to fit

spitfirees20 · May 12, 2007

A breaker bar only works to an extent, then... well... you're screwed. If you can't get it, there are two things you can do: 1) get a torch and melt it off, or 2) take it to an exhaust shop. These midpipes can be a real b****

Twista · May 12, 2007

If its stock system than youll need a torch on a 98GT. My buddy used a torch on my head bolts and everything came loose after heating them up to an amber color. After you get all installed and later down the road than pb blaster or wd40 and alot of strength+swearing should break it loose..

sgarlic · May 12, 2007

With flows, that's an awesome sound. Just too much of a fume smell for my taste.

You really need PB Blaster, or a penetrating oil. WD-40 is more of a solvent, and won't sit there and creep in to the places you need it.

Mac H-Pipe: Awesome

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