slidai

I posted yesterday but I probably sounded like a moron so let me rephrase my question.

I installed an off road h pipe (MAC Pro Chamber) on my 2006 GT. I had a stock mid pipe in there before. Whenever I accelerate but especially when I just let off the gas and coast to a stop in gear, there is a very loud fluttering sound coming from the bottom of the engine close to where the oil reservoir is.

I originally thought there was an air leak with the mid pipe but there is not. This obviously did not happen with the stock pipes. Does anyone have any idea what this could be? Maybe the bolts on the new pipe were not tightened enough to the headers? Maybe I am missing a gasket? It does not sound like its coming from the pipes themselves, but that’s the only thing I can think of. Unless there is some tune I should be doing after the install. I only have a very limited knowledge of this stuff.

Thanks in advance

Starfire

I thought from what I've read that the prochamber it's self makes an odd noise, don't quote me though.

AmericanMuscle4.6GT

QUOTED












haha......but yea the prochamber is known for what your describing.

slidai

when i get home i will try and make a video of te sound. i had this same mid pipe before and it didnt make this noise. well it did but on a scale of 1 - 10 before it was a .5 and now its a 10. it really sounds like its coming from the bottom of the engine. the pro chamber i assume is the welded square that merges the the two pipes together near the center of the car. i was under there yesterday looking for a leak and that part of the exhaust made no wierd sound. i then checked under the engine and thats where really noticed it.

slidai

For anyone who might have been interested in the problem, there was actually a pretty big leak on the left pipe connecting to the header. Fixed it and car sounds awesome. Check engine light came on last night... i haev MIL's on the car so i am hoping it will go off in the next couple days. Took 4 to come on so *cross fingers*