I'm just finding it hard to understand on how one guy can say he's running EMGO pods with open MAC 4-1 with 105's and it's running perfect and another guy can say he's running 125's with the same setup and it's running perfect. Obviously there is going to be some variation between bikes, and of course other variables to take into consideration (elevation, temp, etc), but doesn't that seem like an extreme difference?
Yes, it does. The problem is that "guy's" reports are subjective and not calibrated to any sort of standard that can be reproduced. "Perfect" can mean they were able to drive around the block and then type on the computer to post a brag.
Or, it can mean they drove across country with no other problems than stopping at every gas station for a fill up.
Still others, use very large mains and then over lean the slide needles to make the midrange tolerable (meaning, not perfect or actually correct at all throttle position between 1/4 and 3/4).
It is very rare that any actual, measureable performance testing is actually done, whether it be timed track events or a graph produced by a dyno.
No one has a calibrated butt dyno. And many times, the ears hear louder sounds and the brain thinks, "wow, its faster since it makes more noise".
I believe the "formulas" bandied about are largely fiction, whose main goal is to give a false sense of well being in the experimenter.
Ever see the "formulas" tested or reinforced by dyno results? Me either.
IMO
Cheers,