Thank you for letting me register, though I may not be here for long. The whole story will eventually come out
but to make it short I am putting a Ford EEC-IV that was intended for a US Federal version of a 1992 Escort with the 1.9L SOHC, MAF, and SEFI into a 1972 Volkswagen Super Beetle with the Volkswagen 4-cylinder boxer engine. I will be using as much of the Ford engine control components as possible.
I ended up doing this after reading an article about converting the VW distributor to a Ford EDIS-4 distributorless system using a 36-1 tooth trigger wheel and a VRS sensor. The next step would have been to purchase a Megasquirt ECU to convert the PIP signal to a SAW using the EDIS-4, etc. It hit me that if the Ford electronics could be used to do a distributorless ignition system in the Volkswagen, then I should be able to do the Megasquirt part with the original Ford EEC. I should be able to get the SEFI capability using the majority of the Ford sensors too.
My questions for all of the experienced experts here are the following. The VW never had EGR, PCV, a Charcoal Canister for HC emissions, or an O2 sensor. There may be some other things I haven't thought of. too that I will either have to install or compensate for. So what I am looking for is how I might fool the EEC so it thinks that the EGR and PCV are working just fine. The O2 sensor must be installed in the exhaust system, but where would be the best place? Since I am using the EEC-4 or an ECU for a 4 cylinder engine I don't see how I could use more than one O2 sensor. The 4 cylinder computer is set up for one O2 sensor.
Before we get to far into this you need to know that I have purchased a few books and found Tech info on Scribd. I purchased the EEC-IV Manual written by Charles O. Probst (How to Understand, Service and Modify Ford Fuel Injection & Electronic Engine Control (EEC) from Amazon) and How to Tune & Modify Ford Fuel Injection by Ben Watson. The book Probst wrote is what gave me the idea of using the system for the VW. The '92 Escort with the SOHC 1.9L was designed to utilize sequential fuel injection (SEFI) and uses a MAF to determine the amount of air going into the engine. It was also an article from a 1999 Motortrend that clued me into the systems using MAF could learn to compensate for a hobbyist's engine mods. That is still available at this link: https://www.motortrend.com/how-to/29438 ... and-tricks. It doesn't have anything for sale and the engine information is free.
If you have any questions please ask. I am in the USA in Houston, Texas.