i have the new 08 ninja. i have the k&n filter area P SO. bought the dynojet stage 2 for it. me and a friend put in the jets since he had more experience working on bikes i knew i would need help. we put in the dj098 jet put the e-clip on the third groove of the needle and adjusted the fuel mixture screws turned out 3 full turns( recomended by dynojet in instructions). dj098 is the recomended jet when the bike has k&n and a SO. that night it ran to rich and loaded the plugs. yesterday bought the hotter plug and turned the fuel screws down to 2 1/4 turns.runs way better BUT now when the bikes fuel vaccume under the tank is turned on it will run for about 5 miles then will die (as if there is no fuel). i checked all lines and they are on correctly. put the under the tank on PRI and it wont die. now i get a popping in the exhaust and it seems like from take off it screams. when it hits 6rpms it has the flat spot till 8rpms and in 5th and 6th the bike doesnt pull as hard as stock.if i cant get the d%$# thing running right i will just put it back stock. i did about 5 test runs before i came to the conclusion 2 1/4 turns of the fuel screws is where it needs to be.i even tried stock adjustment at 1 3/4 turns out. maybe i need to size the jets up (dj100) or down (dj096). any help would be greatly appreciated.i am currently running the bike on the PRI circuit cause the bike is all i have to get to work on till i fix my car.