Hey Guys,
I have an 03 GT and I think I may have a pretty serious problem with my exhaust. About a month ago I replaced my BBK H-pipe with a BBK X-pipe because I had heard a rattling in the exhaust. Turns out one of the cats had melted down and fell apart and the pieces were knocking around between the cats and cat-back. I managed to pull two tennis ball-sized pieces of cat honeycomb out of the front of the cat-back. So I've been running with the next X-pipe for a while now, no problems and two weeks ago I heard a similar rattle. Sounds like a screwdriver bouncing around in the exhaust and it gets worse as I lay on the accelerator because the exhaust flow speeds up. I don't know where the rattling would come from now though, its a new X-pipe - there's now way those cats could have already broken down. Or is there?
Over the weekend the noise seemed to go away.....now I fear I have a bigger problem. The exhaust has quieted down significantly and when i get the RPM's up around 3000 for any length of time the car starts to shake very uncharacteristically. If I had to guess, one side of the exhaust is clogged. To complicate things, I have the Flowmaster 40 cat-back, what if parts of the broken up cats are lodged in the delta-flow channels? Am I pretty much screwed? Any suggestions?
I have an 03 GT and I think I may have a pretty serious problem with my exhaust. About a month ago I replaced my BBK H-pipe with a BBK X-pipe because I had heard a rattling in the exhaust. Turns out one of the cats had melted down and fell apart and the pieces were knocking around between the cats and cat-back. I managed to pull two tennis ball-sized pieces of cat honeycomb out of the front of the cat-back. So I've been running with the next X-pipe for a while now, no problems and two weeks ago I heard a similar rattle. Sounds like a screwdriver bouncing around in the exhaust and it gets worse as I lay on the accelerator because the exhaust flow speeds up. I don't know where the rattling would come from now though, its a new X-pipe - there's now way those cats could have already broken down. Or is there?
Over the weekend the noise seemed to go away.....now I fear I have a bigger problem. The exhaust has quieted down significantly and when i get the RPM's up around 3000 for any length of time the car starts to shake very uncharacteristically. If I had to guess, one side of the exhaust is clogged. To complicate things, I have the Flowmaster 40 cat-back, what if parts of the broken up cats are lodged in the delta-flow channels? Am I pretty much screwed? Any suggestions?