So I have a small, yet annoying issue:

I backed up and lightly tapped my left exhaust on the curb, didn't realize it was the one spot at work that the boundary stuck out farther then the rest of the parking lot. There was a slightly crease on the bend where at the left pipe meets the Y split. It caused the cat to shift a little to the right. Around 2500-4000 where there's the most resonance the cat will knock/bump/shake on the right side of the cat tunnel underbody.

My initial plan was to get some DEI heatwrap / Heat sound damper sheet, line it on the cat tunnel and wrap the cat so whatever resonance bump there is would be wrap on wrap and hopefully unnoticeable, instead of metal on metal.

Then today I was thinking would it be possible to bang that cat tunnel a little bit where it's hitting to solve the problem (for the sake of saving money). Would this cause any harm to the car? I'm not sure how thick that underbody is, so would it even be possible?

Or last (and least preferable) vice grip the crease and try and push it back flush. I don't like this idea much as I'm afraid of doing too much and making the crease not just external.

Or I'm welcome to any other ideas that I possibly haven't thought of. Appreciate the insight as always guys.

 

Any thoughts

 

Without actually seeing the exhaust, I can't really judge what you can or can't do. You can definitely massage the tunnel, however I'd leave that as a last resort.



Go to a muffler shop, put the car in the air, and have them fix it. It may be as simple as bending the hangers a bit.

 

Assuming you have an OEM exhaust, I'd try to unbend the crease first. You'd have to remove the entire exhaust (bit of a hassle) then see if you can rig the OEM tire jack to unbend it by pressing on the flange which bolts to the cat and front of the left muffler using perhaps a piece of 4x4" lumber or 2" pipe.

 

Get a new exhaust

Either aftermarket or grab someone's stock one that's sitting around. People here are giving them away for free.

 

I'm running Asura exhaust. The small crease is purely external and very minor, and no other exhaust will ever go on this car When I said banging the underbody I meant from the bottom up. Not through the interior.

I've got a lift that I can use for free, I just was looking for ideas before I get it up a second time

Perhaps I will just take it to a shop