Mat Holland Posted September 19, 2008 Report Share Posted September 19, 2008 Ok, I had a problem, and we did a top end rebuild on my 2000 banshee. Im in the process of getting it jetted right for my pipes. They are dyno port racing headers, with dg silencers on them. I live in illinois, idk what my elevation is. My snorkle is off my airbox. We put 220 mains in it and im still breaking in the new top end, i almost have 1 tank of gas ran through it. So now I need to see about my jetting. I got on it a little bit, and about half throttle it want to pop, like a backfire. The main jet is the only thing that I changed. What does that mean with the backfiring or poping? Once i get a full tank of gas through it then I can give you guys a sparkplug pic. Quote Link to comment Share on other sites More sharing options...
LS1Inferno Posted September 19, 2008 Report Share Posted September 19, 2008 if you have stock carbs, you need to go up to about a 280 -290 thats WAYYYYYYYYYYy to lean you WILL burn it up if you ride it. and ive never seen dynoport racin pipes is it the 2 into 1 pipe? Quote Link to comment Share on other sites More sharing options...
Mat Holland Posted September 19, 2008 Author Report Share Posted September 19, 2008 no its not a 2 into 1. why is it on banshees that you have to go up that big? Thats like a huge jump! should I try a 260, i have those already? Quote Link to comment Share on other sites More sharing options...
magz Posted September 19, 2008 Report Share Posted September 19, 2008 no its not a 2 into 1. why is it on banshees that you have to go up that big? Thats like a huge jump! should I try a 260, i have those already? im running 350's, but even when my bike only had t6 pipes and k&n pods i was running 320's, and then when i had t6's and K&N proflow i was running 290's.. lean is mean and well rich is like a warm vagina. kinda.... Quote Link to comment Share on other sites More sharing options...
ASRBanshee Posted September 19, 2008 Report Share Posted September 19, 2008 first off what filter is it? Quote Link to comment Share on other sites More sharing options...
Snopczynski Posted September 19, 2008 Report Share Posted September 19, 2008 no its not a 2 into 1. why is it on banshees that you have to go up that big? Thats like a huge jump! should I try a 260, i have those already? If your gonna ask us a question, then we are going to give you an answer based on what we know. We are not necessarily going to give you an answer that is convienient for you. So if the man says a 290 or a 320 main jet, and you dont have it. Go out and buy it. I ran 390 mains in my bored stock carbs on my old ported bike. Quote Link to comment Share on other sites More sharing options...
IrideA250R Posted September 19, 2008 Report Share Posted September 19, 2008 (edited) I agree, 290 to 320 on the mains, and richen the needle up as well by raising the clip to the 2nd notch from the bottom. Edited September 19, 2008 by IrideA250R Quote Link to comment Share on other sites More sharing options...
ASRBanshee Posted September 19, 2008 Report Share Posted September 19, 2008 Your giving numbers and not all the airbox mods are listed. 320 mains?? what if he is running a stock filter with cage you dont want to be higher than like a 260. Again filter brand is essential. Quote Link to comment Share on other sites More sharing options...
Mat Holland Posted September 20, 2008 Author Report Share Posted September 20, 2008 well, i put 290's in it today, and spark plug looks good. nice coco brown. however, i did notice that i fouled a plug when i was running down the road? Never fouled a plug that easy before? Why is that?? Also, uni air filter. im gonna get a k&n soon. Quote Link to comment Share on other sites More sharing options...
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