55 seems awfully high. I got 46+ once after putting around in 3rd & 4th one day with a bunch of Harleys.
Normally, if there are 4 to 6 start/warm ups, I'll get 35 -37, running through a whole tank with no start ups, usually 40 - 42, but no more.
Wonder if the 55 is 'sposed to be 45! That's still a good number!