Hello all.   I've been reading all the post on this site for a few months, since i bought my 2006 s40 last september, love it and love this site.The snow starts flying at the end of november here in northwest Pa. so you can imagine what it was like waiting till May to ride. i did alot of reading and learning here. and again this site is great. My question is " can the slightest- littlelest exhaust leak between the muffler and header pipe cause backfireing when shifting".? i know theres a small leak between the header pipe and my jardine slip on. i tried to tightin it as much as i could and it still leaks . i was told a little leak wont cause the backfire. so im asking all the experts out there to please fill me in about what i can do.   thanks and safe riding  dave_d

thanks meck  for  the reply. is that available at auto zone?and do i remove the slip on to apply it ?

dave_d wrote on 06/17/08 at 12:47:19:


Yes I got mine at AutoZone. I'm not sure about whether or not to remove the slip-on and apply it to the whole fitting. If the whole fitting doesn't have a thin smear of the stuff, you may be introducing small paths for air to enter. If it were me, I would apply a very thin, even layer on the fitting, put it together, then apply another line at the joint. Be sure to let it cure at least overnight, if not 24 hours, before exposing it to that heat.