I just installed my Injen exhaust. Very nice look and sound but there's a lot of play and it sways around while I'm driving, bumping into the bumper and making clunking noises. I checked 3 times and re-attached the muffler but there's only 2 bolts...what else can I do?

I was thinking about using exhaust hangers that would drop it down about a half and inch...any suggestions?

Thanks!