Well my Corksport testpipe was leaking with the stock cat back from the top, like all of you, sooo heres how I stopped it.
First jack your car up blah blah and unbolt your 2 bolts going to the stock cat back. Then get some of this stuff:
And apply it to the catback all over the flange.
Now put the bolts back together and apply another layer like this:
And your done, worked for me, IDK how long it would last, what do you guys think?
(dance)
First jack your car up blah blah and unbolt your 2 bolts going to the stock cat back. Then get some of this stuff:

And apply it to the catback all over the flange.
Now put the bolts back together and apply another layer like this:


And your done, worked for me, IDK how long it would last, what do you guys think?
(dance)