Just about to embark on wiring the Speedy into the Sierra 2.8 v6 and just want to check on a few things before I start.
I was planning on using the original fuel relay that runs the fuel pump for the K-Jet. Is there any real reasons
as to not using the original relay instead of rewiring the pump relay to be controlled by the Speedy?
The original relay has a built in safety circuit that when the ignition is turned on, the fuel fuel will run for approx 5-6 seconds and if it doesn't detect a ignition signal from the coil will shut down. The relay is a LUCAS FDB502.
I was hoping that if I run a wire from the #2 pin on the TFI module direct to the coil and leave the rest of the original wiring to the coil. This should be enough to signal the fuel pump relay to stay on, plus save on rewiring tach as well. I'm just trying to keep the wiring as simple as possible.
The plan is to use the TFI distributor and have been following this thread with interest viewtopic.php?f=19&t=1555. From is, does this mean I would be better to go to the May firmware(currently have the June firmware loaded) to avoid any potential problems?