I have searched all the threads and spent an lot of time reading on how to deal with the leak of the #1 primary slip-in header tube. My question is why do they leak so much?? I no flow expert but why doesn't the exhaust flow past the joint a lot easier than it does???. I don't have cats so that's not creating any backpressure. SO, could the type of exhaust system I have be helping create the backflow that causes it to leak??? I had a 4" mufflex system but all it did was rattle and was way too loud so I put in a 3" catback with a Flowmaster (which I hate the sound of more than I could have dreamed). I don't want to drone on but does anyone know it the type of exhaust we have has anything to do with the amount of backpressure created and thus causing the slip tube to leak easier????

 

Anyone???

 

I dont really think the brand of exhaust has much if anything to do with it. There just seems to be a variance in the fit of the slip fit between different sets of headers. Some are a very tight fit that may not leak while others are somewhat loose and will definately leak.

Mine seemed to be fairly snug on my Jet Hots, but I put a t-clamp on it just to be sure it wouldnt leak

 

For some reason that is part of my problem, I think. Mine seems to fit really loose, so if the present fix doesn't work I am planning on removing it again and having it stretched just a little with a muffler expansion piece and see if that works. Anyone know of any problems with stretching the header piece just little???

 

I think that would be the best option. Mine doesn't leak, I had to actually sand down the end of it a little to make it fit.