I'd love to provide an update saying I fixed the problem but ever since i posted about it I could not duplicate it. I have ridden about 500 miles now in 80-90 degree weather and it has ran crisp and strong. Sometimes it is easier when things fail big to diagnose!
Edit: I have Denso...
It has UFO 4-2 exhaust. The original owner stated he did use a jet kit but said he lost the info for sizes. I did have the carbs apart to clean everything out about a year ago when I adjusted the float levels but I didn't check what was installed.
I have a strange issue I have been having trouble resolving, and I am hoping for help from the experts here. I have a 2005 Vmax with about 8500 miles. It was well cared for, always garaged. It has developed a strange misfire over the last year or so, and it only shows up when it is over 80...
Bill / Magnablower, do you have any videos or info on the 200mph or 240mph vmax? I would imagine that would take a massive amount of horsepower since our bikes are about as aerodynamic as a sideways piece of plywood. Even on a sportbike I would bet 240mph would take 400+ hp.
When I drained out the float bowls to winterize the vmax this year I noticed a fair bit of rust coming out of the left rear float bowl. The other bowls had little or no rust fragments. I refilled the bowls about 4 times and drained, and continued to get a little bit out of the left rear float...