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Voltage value below 0.85 volts at full throttle is an indication that the engine is running too lean for safe full throttle
operation. It is helpful to observe Mapview to determine the location on the map of the full throttle conditions for your
engine. Save all the above changes and send the information to the ECU.
WARNING!
Have an assistant monitor the software package or to operate the vehicle during tuning and adjustment.
Failure to pay attention while operating a vehicle is unsafe and can lead to property damage, serious
injury and/or death!
WARNING!
Any modifications made to the engine maps should be made with the vehicle stopped in a safe location,
Changes made while the vehicle is in motion could result in a loss of power causing an accident
resulting in property damage, personal injury and/or death.
13 - To adjust warm up on your vehicle, note the temperature of your cold start. If your engine requires more fuel during
warm up, i.e. backfires through intake, stumbles, add more warm up fuel by increasing the fuel compensation values. If
your engine requires less fuel during warm up, i.e. black smoke, missing, remove fuel by reducing the cold engine fuel
compensation values. These values are in the Engine Temperature Compensation section under "Edit". Add or subtract
fuel at the temperature of your cold start to meet the requirements of your engine. Save these changes and send the
information to the ECU. These changes may take several cold starts to complete. To ensure correct test results, the car
has to be exposed to cold temperatures over night.
14 - Adjust the Accel pump curve by listening to the engine sound and feel and watching the engine exhaust. If the engine
bogs (acts sluggish) and a puff of black smoke comes from the exhaust, indicating too much fuel, note the engine speed
and load and adjust the Accel pump curve down. If the engine hesitates or backfires and no smoke exits the tailpipe,
indicating too little fuel, adjust the Accel pump curve up.
WARNING!
Any modifications made to the engine maps should be made with the vehicle stopped in a safe location.
Changes made while the vehicle is in motion could result in a loss of power causing an accident
resulting in property damage, personal injury and/or death.
15.0 OPERATION OF THE PRO-JECTION SYSTEM
15.1 Normal Starting Procedure
Cold engine - Do not touch the throttle control. Crank the engine for 3-5 seconds. The engine should start, or start and stall.
If the engine did not start or did not continue running, press the accelerator pedal to ¼ throttle. Crank the
engine with the throttle in this position until the engine starts or for 12 seconds. If the engine does not start
after 12 seconds, the engine may be flooded. Allow the starter motor to cool. To use the "Clear Flood" mode,
increase the throttle control to wide open and hold while cranking. As soon as the engine starts, release the
throttle control to the idle position. Do not crank the engine for more than 15 seconds at a time to prevent
premature starter failure.
Hot engine - It is not necessary to touch the throttle control to start a warm engine.
15.2 Normal Operation and Use
The Holley PRO-JECTION fuel injection system allows the user to set up the system to obtain optimum performance and
economy and not make any further adjustments. No special procedures should normally be required to operate the vehicle
during everyday operation. Once the systems have been calibrated, it is not necessary to monitor the system or keep either the
calibration module or the PC connected to the system.
16.0 MAINTENANCE AND STORAGE
The Holley digital PRO-JECTION system is designed to give many hours of service with minimal maintenance. The following
periodic maintenance is required to ensure your continued satisfaction with the system.
1 - Use a good grade of fuel. Always use a quality gasoline from a reputable service station. Pick service stations that pump
large quantities of fuel to ensure fresh gas and less contamination from underground tanks.
2 - Add Holley fuel system cleaner to the gas tank every 3 months according to the directions on the system cleaner. This
will keep injector patterns optimal for best performance and economy.
3 - Change both fuel filters annually or at 500 hours. Use only filters rated for high pressure fuel injection service.
4 - To ensure safety, performance, and reliability, periodically check all fuel lines for cracks and replace as needed.
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Table of Contents
Troubleshooting
