I've been reading some of the vacuum related issues and for the most part they all share the same symptom of rough idle. My issue is the opposite. I have a '99 TLR that idles perfect but when rpm's increase the engine seems for a second to want to die. When the prob. starts I can get to around 6 grand then it's like I cut the key off for a split second then back on. It does this like clock work, every two seconds. The longer I keep messin' with it, it gets worse and in a lower rpm. eventually I can't even get off idle but still idles fine. When I turn the bike off for a few minutes then restart it, it does the same cycle and occasionally runs like a champ for 5 or ten minutes. The only thing I've done is remove the flappres in the airbox lid. Do I need to remove ALL vacuum lines with this mod. I just plugged the port on the solenoid that the line to the flapper came from. Never rode a bull before but with this going on, man, feel like I'm gonna get bucked off.