11/23/2023 0 Comments Change psi to kpaType in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. You can find metric conversion tables for SI units, as well as English units, currency, and other data. The unit is named after Blaise Pascal, the eminent French mathematician, physicist and philosopher.Ĭ provides an online conversion calculator for all types of measurement units. Odd It's been this way for at least a year or so, if not forever. ![]() Nothing else changes from a previous setting besides tire pressure units. Then after a couple more drives it resets itself back to kPa. The pascal (symbol Pa) is the SI unit of pressure.It is equivalent to one newton per square metre. Every few drives, the tire pressure units shown on the driver screen change to kPa. The definition of a pascal is as follows: The SI prefix "kilo" represents a factor of It is the pressure resulting from a force of one pound-force applied to an area of one square inch. The pound per square inch or, more accurately, pound-force per square inch (symbol: psi or lbf/in² or lbf/in²) is a unit of pressure or of stress based on avoirdupois units. KPa to PSI, or enter any two units below: Enter two units to convert From: Sometimes I can still hear the gears grinding in my head.You can do the reverse unit conversion from Then we had to try and forget everything we had been taught since Grade 1 and switch to Metric. So for 10 years my Generation was taught Imperial measure. The head in feet water column can be calculated from pressure 100 psi with eq. Example - Converting Pressure - psi - to Pump Head - feet. The pressure - psi - of a water pump operating with head 120 ft can be calculated with eq. Go figure.Ĭanada switched to the Metric system in 1971. Example - Converting Pump Head - feet - to Pressure - psi. I still find it easier to correlate in/hg and PSI when quickly looking at a Vacuum/Boost gauge while on a Race Track. Gradually, with both gauges visible, my Brain began to correlate the two scales together. ![]() As noted, these are Calibrated with in/hg for Vacuum but PSI for boost. When I started Tuning EFI with Tuner Studio, I found it helpful to have Engine Load in KPA, then I added a Vacuum/ Boost gauge. Lots of runs up long hills with a Vacuum/Boost gauge and doing Spark Cuts. The old values in Imperial were what I was used to, as I was tuning Carburetors long before Narrow Band O2 sensors were even made. You would just be hobbling yourself in more ways than one.įor my Imperialistic mind and perspective. If you have an issue down the road (and you probably will, I still have them 15yrs and 200+ installs later) nobody is going to be able to easily translate your tune into terms that they can understand. But really just get yourself thinking in kpa and save a lot of trouble. Print out your VE tables and mark them up to give you a rough idea if you want. Basically, everyone who has been tuning for a while, thinks in kpa. ![]() There is the first issue, vacuum gauges almost always work on inches of mercury to start off with, then above atmospheric pressure, they change to psi.Įngine management "thinks" in absolute pressure. Ambient pressure is zero, full vacuum is 29inches of mercury (or -14psi) and 10psi is 10psi of boost. A combo vacuum-boost gauge is how your likely thinking. But your (probably) not thinking in absolute psi. PSI ones change based on several factors, unless as LT401Vette says you run absolute psi. Kpa scales don't change, they are absolute. ![]() Everyone told me not to bother and just get used to kpa, so I did. Back then we were using MegaTune and I think it was actually just a quick. I thought the same thing when I started tuning 14-15yrs ago.
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