I have the ZZP bolt-on header and dp combo, and there is a leak in between the header and dp I have gone through 3 new gaskets and it has blown them all, I also tryed high temp gasket sealer and that held for a little. Can it be welded togeather even though it's a bolt on? and is there anything else I can do to fix the leak.

 

Weld it together. Go to a muffler shop.

 

how can u tell theres a leak?

 

I had it on a lift and put my hand there and felt the hot exhaust fumes comming out. and when im at a light with cars next to mine you can hear the sound echo from under the car.

 

Yeah I have the same problem... a 2 bolt design was a horrible idea, oh well, I'll get it welded