I'm trying to figure out what relevance the atomizer (or infuser pin) has in terms of tuning. I'm aware of its function; to atomize the fuel/air mixture into a gaseous state so it is more combustable.
What effects to performance does changing an atomizer to smaller/larger size cause?
In what tuning situation would you change the atomizer?
Here's why I ask. I'm trying to tune the following setup:
A55 w/ 70cc airsal
78 main jet
Whichever idle jet that comes with this kit
UNI POD filter
27t front 22t back
needle set to richest
I've tuned up idle mix on the carb and have great take off from a stop with minimal bogging. My top end is what puzzle me. With a 74 main jet, im really lean but easily cruise on flat ground at 40-42. with a 78 main jet (good fuel mix, not too lean) im getting only 37-39.. maybe touching 40 on occasion.
The only thing i can think of that's left to mess with is the atomizer. Should i pop the stock one back in? i dont fully understand what the effect on performance will be if i change atomizer sizes.
The idle jet seems fine cause like i said, take off is fine and it idles fine. I know it does play a trivial roll in top end performance as well, however.
Let me know what you guys think.
ALSO- could it be timing? Im running the stock ignition w/stock timing.
OR-does my pipe just suck?