2-storkerHHM

check and see if you have any cracks in the intake boot?

around 1500 ft... and the plugs there like dark brown when i pull them

I Love the T6's tho the powerbands all or nothing ya know, I had t5s the powerbands to open... and Right at top of 6th its just starts spittin and slowy loses it power...

Okay, I have a 2004 Yamaha Banshee With t-rex cylinders, v force 3 , dynapro coil new and new wires, new CDI, w/ t6's So the only thing left I would think would be jetting or needles? I have 34 mm TM flatsides with 50 pilot and 280 mains its around 50 60 degrees pretty high humidity... Kansas... its a semi drag bike dunes or large open track bike dirt is mostly the only riding i do with it. So the problems is it sputters in high rev but mostly Wide Open Throttle in 6th... if anyone could help or give me any advice PLEASE>>>