I got it down to about 50 RPM or so using the new ABS
sensor to trigger the 555 fuel injector. It took a couple
of diodes and a resistor. Next change will be to check
the fuel flow meter circuit. Then I will do another batch
of PC boards for further testing

Here is the latest version. A few more minor changes on the way.
When Larry gets the new slide throttle done we will go back
on the dyno with the RX8 p-port engine and this 555 EFI system.
I have a good slide throttle I can use so no rush on Larry's.

Things are not going as fast as I like as I am spending mornings
installing a new central heating system in our house.

Paul Lamar