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Hello! I've been running a stage 7 setup with vboost eliminated for some time. WOT just fine. I installed the vboost assembly recently, without making any other changes, and now have a bad stumble at 4K WOT. Should i drop or raise the needles?

Hi! My 88 has had the vboost assembly removed. I have a 2002 assembly on hand, that i want to buy and install on my bike. Will it work? Does the 02 controller talk to the 88 ECU?

I picked my motor apart. Valve seats and valves did not look very pretty. After lapping the valves, the contact area between valves and valve seats measure about 1.2 - 1.4 mm wide. The manual specs a service limit of 1.4mm, and a desired seat width of 1mm. Do you think it's worth the...

http://www.youtube.com/watch?v=VMIC1wUzUj0 So what do you think? Look like a bad exhaust valve to me..

What does the little washer on the needle that goes between the E-clip and big washer do in a stage 7 kit? Does it REALLY need to go there?=) http://www.dynojet.com/pdf/4716.pdf

http://vimeo.com/59191280 Crazy bastards!!

My bike runs like crap while cruising, when I have the clip in the fourth slot from the blunt side of the needle. If I move it to the fifth, it's almost good, but I still get annoying stumbling when going slightly downhill/cruising. I have 165 DJ mains installed, and a stage 7 kit. Is it not...

Hi! I have an 88 with 37k on the clock. My engine makes a ticking noise when it is warm. I've probed around with a stethoscope, and the noise is loudest when you put the probe on the valve cover bolt, over no3 cylinder exhaust valves. I took the valve coves off, and measured the valve...