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Pro-Flo EFI Installation Instructions
©2008 Edelbrock Corporation
Brochure No. 63-3527
Catalog #3527, #3528
Rev. 8/08 - AJ/mc
ADDING AFTERMARKET IGNITION
If you are wishing to use a MSD 6AL or MSD 6-Digital ignition with your Pro-Flo fuel injection, follow the wiring diagram below.
NOTE:
When installing the MSD box, keep the red battery lead, the main MSD box, and the power leads to the ignition amplifier AWAY from the
ECU and it’s wires. Failure to do so will cause serious communication and running issues.
TYPICAL INSTALLATION
OTHER APPLICATIONS
The Pro-Flo XT system has been designed and calibrated specifically using the Chevrolet 350 c.i.d. Small-block with large-valve style cylinder
heads (such as Edelbrock’s Performer RPM Street Cylinder Heads with 2.02-inch valves) and tubular headers as a baseline.
It is unlikely that every engine on which the Pro-Flo XT system is installed will match this baseline combination. The system can be used with
similar applications, as long as the necessary fuel calibration adjustments are made. If your Small-block is not a 350, does not have headers, and
uses small-valve style cylinder heads (such as Chevrolet aluminum HO heads with 1.94-inch valves), it may require additional tuning
adjustments. For further information refer to the SYSTEM SET-UP SECTION of the Owner’s Manual.
If you are running small-valve heads and/or you are not using tubular headers, it may be necessary to adjust the air/fuel ratio at WOT from 4000
rpm and up. Refer to the table below for starting points for adjustments. Refer also to the SYSTEM SET-UP section in the Owner’s Manual. Use
the FUEL @ WOT screens (located under FUEL MODIFIERS) to adjust the fuel at each available RPM..
WARNING: Watch the Rich/Lean light on the Calibration Module. If the light indicates a lean condition (red) for more than a fraction of a second at
06” vacuum or WOT you are too lean for safe engine operation at full load.
