I have a question about a bike...not my own however.
Apparently the bike has a fall in power around 4000RPM. Its not that noticeable in 1st gear. But it gets progressively worse (or is more noticeable) in 2nd, 3rd, etc... at the same RPM.
Apparently the guy has tried all types of carb setting and thinks it might have something to do with the 4-1 headers. I can't see how this would be. Its gotta be something else.
So I'd just like to see if anyone knows what might be up with it.