Originally posted by MikeC
Hi Countryboy,
I guess you meant to say OBSOLETE instead of ABSOLUTE ! 
Mike C
Mike,
Thank's for the heads up on the wrong terminology. Must of had "Absolute" total brain fart.
May come from testing to many intermittent problem (MAP) Manifold Absolute Pressure sensors.
At any rate, I saved that article figuring that it may be useful some day. With the newer style Robart regulated valves, the retract & door sequence should be even easier to set up. My plan is to use the system you developed on my own Avonds F-15.