I used a 17. I can hold it wide open all day and it won’t get hot. Rail pressure tops out at about 200.
Upon further research, there is more to the throttle shaft screw than just changing max rail pressure. Best to leave it alone.
So turning the screw raises rail pressure and changing the button raises rail pressure. If both methods have the same end result, why do people generally change buttons instead of just turning the screw?
So the way I understand it, on an 855, the only thing that determines the fuel rate is rail pressure, right? So if that is the case, what’s the difference between changing the button and adjusting the screw?
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