An incompatible pipe combined with a leak is sure going to make tuning hell..
Just a small leak at the pipe can make a huge difference in jetting.
You need to get that thing sealed up on both intake and exhaust before you proceed any further.
just a quick wuestion to piggy back of this exhaust leak.. my exhaust is fine... i think its a dg (i know there crap but it came with my bike)
but anyways i just got the stock pipes clamp that hold the expansion camber an silencer together...
it keeps falling apart there... is there anything else i could use or something i can do to keep the two sides from fall apart from each other?