With engine off and exhaust cold, bang on the muffs with your hand, or lightly with a rubber mallet. Maybe some tach welded baffel came loose in the muffler and you may be able to re-create the sound by banging on it. Just use discretion, and dont beat the crap out of it.
I had a simular symptom and it turned out to be a washer on one of the bolts between Hpipe and flow tubes (the part between H and mufflers) the bolt had loosened up slightly and the washer would vibrate at certain rpms. The "bang on it with a rubber mallet" idea is good.
listen real close to the converter i sent back two bbk it sounds like there are marbles in the conveter.Hopes this helps
lol, chances are he got the problem fixed within the past 3 years. He posted that in August of 03 I guess the other guys aren't much better, they waited 4 months to reply to the poor fella Thanks for using the search function, though Just messing w/ you man, I know you're new. Welcome to Stangnet By the way, o/r (off-road) H pipes don't have converters, so that probably wasn't it.
Probably inside the muffler.Make sure all clamps are tight. Or your exhaust mite be rattling against something on the car. I have Bassani's and it was rattling against the gas tank area and was making a real annoying sound.
