Gauge name
Range
Units
Abbreviation
Fuel Pressure PSI
0 to 111
PSI
Fuel PSI
Fuel Pressure kPa
0 to 765
kPa
Fuel kPa
Fuel Pressure
Fuel rail pressure at the engine relative to atmosphere (Gauge pressure)
Gauge name
Range
Units
Abbreviation
Intake Pres abs PSI
0 to 36.98
PSI
MAP PSI
Intake Pres abs kPa
0 to 255
kPa
MAP kPa
Intake Pressure
(MAP)
Intake Manifold Absolute Pressure (MAP). This is absolute pressure as opposed to being
relative to atmosphere (gauge pressure).
The pressure reported is the pressure above absolute vacuum. When this gauge reports 14.7
PSI, that means the pressure in the manifold is the same as that of outside air (at sea level).
Gauge name
Range
Units
Abbreviation
RPM
0 to 16,384
RPM
RPM
Rotations per minute of the engine crankshaft
RPM
Gauge name
Range
Units
Abbreviation
MPH
0 to 158.4
MPH
MPH
KPH
0 to 255
KPH
KPH
MPH / KPH
Vehicle road speed
Gauge name
Range
Units
Abbreviation
Timing Advance
-64 to 63.5
degrees
Tmg Adv
Ignition Timing
Advance
Ignition timing spark advance in degrees before top dead center for cylinder #1. Does not
include mechanical advance, if any.
Gauge name
Range
Units
Abbreviation
Intake Air Temp ºF
-40.0 to 419.9
º
F
Intk ºF
Intake Air Temp ºC
-40.0 to 215
º
C
Intk ºC
Intake Air
Temperature
The temperature of the air in the intake manifold. When the engine is cold, this is equivalent
to outside air temperature
Gauge name
Range
Units
Abbreviation
Mass Air Flow 1 g/s
0 to 655.35
grams/second
MA1 g/s
Mass Airflow 1
The Mass Airflow rate of air into the intake manifold. This is the raw un-calibrated sensor
output. The sister gauge, “Mass Airflow 2” is the calibrated or calculated version
Gauge name
Range
Units
Abbreviation
Throttle Position 1 %
abs TP1%
Throttle Position 2 %
0 to 100
%
abs TP2%
Throttle Position
The percentage that the throttle is open. This is the absolute output from the throttle position
sensor as a percent of the TP Sensor’s max value. The closed and wide open throttle positions
will likely not be equal to 0% and 100% respectively. For example, the physically closed
throttle position may correspond to an absolute position of 8%.
“Throttle Position 2” is for vehicles with a second throttle Position Sensor
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Page 20/55 UltraGauge™ EM User Manual www.ultra-gauge.com
