Gen 7 Distributors
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Gen 7 Distributor Installation Instructions:
1. Make a mark on the
distributor housing you now have in the motor, to indicate the location of the
wire for # 1 cylinder, and remove the cap from the distributor.
2. Rotate the engine to Top Dead Center
of cylinder # 1, and make a note of which direction the rotor is turning.
It will be either clockwise of counter-clockwise. Verify that the rotor is
now pointing at the sparkplug wire for cylinder # 1.
3. If you are replacing another distributor, disconnect the
distributor wires and remove the distributor from the engine.
4. Before installing the distributor, attach the Dual Sync
Distributor adapter wire harness to the DFI Gen 7 main harness, making sure the
ground leads are also connected to an appropriate grounding point on the engine.
5. Turn the ignition to the Key On, Engine Off position,
and launch the DFI CalMap Engine Management Software program.
6. Select the "Online to ECM" data source to start
the program. Go to the engine Configuration screen and press CTRL-S
key combination, or select the System menu item from the Configuration
menu.
7. From the Injection Type drop-down list, select Sequential
for your fuel injection control strategy. Press the F10 key to send
this change directly to the DFI Gen 7 Engine Control Module (computer).
8. Change the Crank Trigger Edge switch to the Falling
position. Press F10 to send the data to the ECM.
9. Change the Cam Trigger Edge switch to Falling
and press F10.
10. Change the Output Trigger Edge switch to Rising, and
press F10.
11. Change the Crank Signal Input Type to Hall Effect,
and press F10.
12. Change the Cam Signal Input Type to Hall Effect, and
press F10.
13. Change the Output Signal Type to Sink, Points, and press
F10.
14. Verify that the Fuel Injector Firing Order is set to the
desired firing order, and press F10.
15. If no error messages were observed, exit the CalMap program using the
file->Exit menu command, or by pressing the CTRL-X key combination, or by
clicking on the Gen 7 DFI icon on the lower right portion of the screen.
If any error messages were present, repeat steps 5-14.
16. Position the Dual Sync Distributor so that you can see both the Red
(CRANK) and Blue (CAM) LED's. Verify that the ignition is still
in the Key-On, Engine-Off position.
17. Rotate the distributor in the same direction as noted earlier (either
clockwise or counter clockwise). Continue rotating until the BLUE LED
shuts completely. This will indicate the falling edge of the cam trigger
position.
18. Continue to slowly rotate the distributor until the RED LED
shuts off. Stop at this point. This indicates the falling edge of
the crank trigger position. Your distributor is now set to Top Dead
Center of #1 cylinder.
19. While taking care not to rotate the distributor, install it on your
engine. the oil pump drive shaft may have to be rotated somewhat to get
the distributor seated properly.
20. Verify that neither of the cam or crank LED's are lit. If
this is not the case, and one is lit, repeat steps 16-19 until neither LED is
lit, and the distributor is installed in the engine. Lock down the
distributor, and turn the ignition key to the OFF position. The key
must remain in the OFF position for at least 30 seconds for the
programming changes to be implemented by the ECM.
21. Rotate the engine backward to 25-30 degrees BTDC. Make a small
mark on the outside of the distributor, next to where the rotor is pointing.
22. Install the distributor cap, and make a second mark at the terminal
closest to the first mark you put on the case. This will be the terminal
for cylinder # 1.
23. Remove the distributor cap, and adjust the rotor with the two
Philips-head screws so it is pointed at the center of the cylinder #1
terminal. You have now "phased" the cap so that the rotor is
pointing to the correct spot in the terminal.
24. Install the distributor cap and spark plug wires. Double check
that the spark plug wires match the firing order previously set in the ECM.
25. Your Dual Sync Distributor is now correctly mounted, phased, and ready
to run in Sequential Fuel Mode.
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