I put on an MRT H pipe about six weeks ago and all was fine. In the last few days, however, there is a noise like a pebble bouncing around in the pipe. It gets faster when I accelarate. Sometimes it is there, and sometimes it isn't . I am guessing it's the H pipe because that where it sounds like it is coming from, but it maybe anywhere. Any ideas? Thanks in advance.

 

check to see if all the bolts are tight

 

Did you use the exhaust pipe seal paste as well? ya might have a leak.

 

loose hanger?

 

Yep, I bought that gasket maker stuff that MRT suggested. We followed all the instructions during the install. As a matter of fact, we lifted it about 2 weeks later and checked evreything. It was okay. We are gonna lift it on Wednesday. I didn't hear it at all on the way home from work. ??? I don't notice any loss of performance and there's no check engine light or anything. If we don't fix it wednesday I'll hit you guys up again. Thanks.