Another Horrible Idle ??

[want-a-fast-svx]

Alright since my 5spd install there is absolutely something wrong with the power delivery. When taking off in every gear until you hit about 4000-4500 rpms' the power is not there.( you can feel this, almost like a bog but different) Soon as 4000 comes around its like vtec or something kicks in b/c its like a new engine from there on up. Its a pig though right now. No check engine lights. Leaking exhaust, but this was definitely not a problem before the new gears...Thanks for any and all help. I have off on thurs. so hopefully I can straighten it out then.