I bought new OEM exhaust gaskets from my Mitsu dealer, and they sent them to my house.

Is there some kind of sealant or seal that you put onto the gasket. I have heard about a copper exhaust gasket sealant that's kinda like a "goop" or liquid. I've also heard of something call "gasket goop" ... has anyone used this stuff to reseal their exhaust gaskets (head to header, header to downpipe)?

- Jason

 

I've heard of Gaskacinch or something like that as well. I think that as long as you put it on carefully and make sure nothing moves during install, all will be fine. But if you seal the gasket in place, I can't see it hurting anything.

 

Just install them. get them on there and torqued correctly and you'll have no problems

 

I see you have the RRM header. If you keep blowing out the collector gasket (2 bolt), then there is a possibility the flange is warped. I had to take mine to a machine shop to fix it. I think the flange gets warped from welding.