I went to get my car inspected a few days ago and it failed because of an exhaust leak (funny, it's passed the last 3 years without a problem). it is caused from the junction of two pipes between the cat and resonator. one fits over the other which allows plenty of exhaust to simply blow around. I thought I'd try a quick fix and put some "exhaust fix" gel up there that hardened and later broke leaving some leak remaining. After I did this however, it feels like my engine idles a bit rougher and i don't feel like I have as much power. I am planning on taking my car to a muffler shop and have them weld it so it will pass inspection, but I don't want this rougher idle to continue.
I am wondering if I should redo the quick fix seal, get it inspected immediately and break it back off to return it to its previous (exhaust leak) state?
thanks,
-Matt Johnson