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Pro-Flo EFI Installation Instructions
©2008 Edelbrock Corporation
Brochure No. 63-3527
Catalog #3527, #3528
Rev. 8/08 - AJ/mc
SENSORS
The Edelbrock Pro-Flo XT system interprets overall engine operating conditions and fuel/spark requirements based on readings from sensors that
measure specific engine conditions.
The Pro-Flo system includes five sensors:
1) Manifold Absolute Pressure
2) Manifold Air Temperature
3) Coolant Temperature
4) Throttle Position
5) Exhaust Oxygen (O
2
)
MANIFOLD ABSOLUTE PRESSURE SENSOR
The Manifold Absolute Pressure sensor, mounted on the intake plenum, converts air
pressure (load) in the manifold, to an analog signal sent to the ECU. For more information
on Manifold Absolute Pressure, refer to the section on Speed Density Electronic Engine
Management.
MANIFOLD AIR TEMPERATURE SENSOR
The Manifold Air Temperature sensor, is a thermistor
device which measures air temperature. This sensor must
be installed in the air intake tract between the filter and
the throttle body. Drill the inlet tube with a 3/4” drill,
deburr any sharp edges, install MAT sensor grommet, then
slide sensor into grommet.
NOTE:
The end user is responsible for sourcing and
attaching an appropriate air filter and inlet tube to the
throttle body. The inlet has an outside diameter of 4.25”.
