Holley Pro Jection 2d Manual
Projections actually work pretty darn well, it just takes someone who knows how to tune them to get them to work. 9 times out of 10, problems come from a lack of understanding and improper tuning methods. While it's no multipoint efi system, it is certainly better than a carb. Back in the early '90s I had some friends who ran roller cammed 401s that turned 7500 rpm at cranked out hp in the high 400s. Running in Tellico was fun, and these guys could tune a projection and showed me how to get my old analog dialed in on my 401. I can give you some quick pointers: you are going to need a voltmeter and a fuel pressure gauge. 1) Set the DIP switches inside the ECU to the small block setting 2) If you can hot wire the fuel pump do so and get it to run without the motor running.
504-13 Pro-Jection 4D. INSTALLATION TUNING AND TROUBLESHOOTING MANUAL. Holley Performance Products has written this manual for the installation of the PRO. Holley 670cfm 2-Barrel Digital Fuel Injection System. Bridgecom Fast Ethernet Adapter Driver Windows 7 Download. The Pro-Jection 2D throttle body injection. Holley ECU box can be mounted on any flat surface.
With the fuel pressure gauge, set you pressure to 15psi. 3) Set the adjustment screws to the middle location.
4) unscrew the idle screw on the TB all the way out so that the blades close all the way, then screw it in about 2.5 turns. Set the voltage across the TPS to.63 volts. While the voltmeter is hooked up, open the throttle all the way and it should read about 5 volts at WOT. Now is a good time to make sure you have a steady rate of increasing and decreasing voltage as the throttle is opened and closed. You don't want any interuptions in the reading which would indicate a faulty TPS. 5) start the motor.
It should be set close enough to idle. If it won't stay idling, or if it's idling too fast, adjust the idle screw to where you want it (about 700-800rpm). You will have to readjust the TPS to.63V if you change the idle speed with the set screw. Also verify you are holding about 15 psi fuel pressure at idle. If you blip the throttle, fuel pressure should stay close to 15 psi. 6) Now you can tune the screws on the ECU. It helps if you understand that setting the TPS sets the total range the tuning screws will affect.