Join Date: Jun 2011
Location: East Central Iowa
Humidity, barometric pressure, air temperature, engine temperature, oil temperature, ethanol or non-ethanol gas, tire pressure, filtering/smoothing level on the computer that draws the graph, throttle technique, transmission gear...........the list goes on and any one of them can account for the difference you're seeing.
Fuel is a big one, and "race" fuels are the worst as most of them are junk unless they've been stored and handled just right.
"Oh but I was running 94 octane pump gas". Yep, that's great, how many people are buying that at 50 cents over regular and how long has it been laying in the underground tank??
"But my motor doesn't ping at all when I run that gas......" Well of course not, the crap won't even burn, how's it gonna ping??
Computer settings are huge, everything from the weather numbers entered to the calibration settings, to the filtering levels used to make the graph pretty.
Not trying to bust anyone's balls, just a little truth and education.
2015 RGU CVO........under continuous change......