Need Help

[SunburstGoldGT]

I was driving back from class today and all of a sudden my mustang starts sounding like an old farm truck, you know that puttering tin can sound. I just got a catback, new intake, see sig. My first thought was that some of the catback had came loose so i checked all the bolts and they were fine, then i checked the intake, it was tight as well. I then got my friend to give it gas as i lay on the grown beside it and it sounds to me like the noise is coming from either the factory h pipe or the headers. It idles fine and doesnt seem like it lost power so i hope its not the engine. Any ideas as to what could be wrong? I cant take it to a shop till monday so im leaving it parked this weekend to avoid damage/more damage. Any help would be much appreciated.

Thanks
B

 

[SPKMustang]

Could definitly be something in your cats, they may have been eaten away on the inside and a piece of the ceramic honeycomb came loose and is rattling away.

just my .02

 

[RUZMAN]

Like SPKMustang said...have the cats checked. That would be my first choice since you claim this started after you did your exhaust.

 

[SunburstGoldGT]

Thanks guys, i just started it again after like 2 hours of being turned off and it sounds worse than it did when i parked it....... not happy....