sunguf

I was wondering if I'm doing something wrong, I've had this leak for a while now (4 weeks or so) You can only hear it on start up from the drivers side Header flange to H pipe flange, and when in 5th gear going 30-40MPH and stepping on it. I've been all day on the floor re-aligning it and re-aligning and even broke a header Stud. Had to buy one at Napa. now my question is do I use the insert that came with the H for that side? or do I take it out (In now) it's a 2004 GT.

Maybe's there's a special way of lining it up? I'm lost. I'll end up going to a shop tomorrow morning if I can't figure it out.

josh662234

i have the EXACT same problem with the exact same pipe. i have taken it off and re aligned it so many times. . i just cant seem to get it on there correctly. it sounds horrible too.

sunguf

Yeah it does! If you figure out what to do let me know! I'll be going to an exhauast shop tomorrow. Might have them make new flanges for the H pipe if they can't get it right

Furinox

MAC was really stupid when they made that flange. I have a prochamber and it needs the stupid gasket/reducer also. My bassani x ligned up perfectly and didnt need one of them.

8banger

I used the insert or reducer in the left side.Sealed so much better with it ...

mvr

im not havnin the same problem but it seems like im fixing a leak in the clamps of my slp setup once every two weeks[:@]. i was under there for two hours today and hopefully this will be the last time.

not quite header bolts but i know exactly how you feel.

dave22478

I have the same problem withmy Bassani, tried it like 3 different times. Bringing it somewhere to get it fixed because I am sick of trying to fix it.

Adam03GT

Thats another reason i ditched the Mac H.......

I called Mac and told them that i just could not get it right and the guy shouts "Hey Sean, We have another fitment problem." And then hung up on me [:@]

k2boarder3187

+1
i had the same problem with my mac h pipe it really pissed me off seems to be ok now but if it happens again im gonna rip it off put a different brand h pipe on and running the mac one over

sunguf

Well I just got back from the exhaust shop(friend of mines) with good and bad news, The good news it's not the H pipe or the manifold or anything with the exhaust leaking. The bad new is it seems to be the pollution pipe (Pipe from the EGR down) or the other pollution pipe/bypass the runs on the back of the motor.

Now I have warranty still and would rather not do this myself, It's a PAIN! but will it be covered? I do have aftermarket exhaust on and no cat. Even though it has nothing to do it with it somewhat does because it's an exhaust leak.

Should I try and get it covered? or am I out of luck on this one. Anyone have this problem?