Please need help with HFC's
 

Hey guys. I just installed my Crawford HFC's a couple weeks ago and I have been enjoying it ever since. But last week something weird happend. Whenever I put the car in reverse it makes a weird grinding noise on the passanger side. This only happens in reverse and when I hit the gas in reverse it sounds like sh*t :icon16:. I went to the dealer and they said it was my heat sheild rubbing against something. I got it fixed but now it only comes once in a while. Any ideas on what should I do? Is it cuz I am an auto? Or my headers?Thanks a lot.

repost sorry.

you get it fixed yet or find out what it is making the noise? Im looking at getting the crawford cats myself soon.