Thanks for the input guys
The arduino is a single-board microcontroller that can be used to read sensor inputs and make output in both digital and analog signals, it is not the most advanced system on the planet but it should be quicker than the ME3.1 data processing and that is all that is needed.
I am getting a few as they make great toys and i had an idea:
If I can generate a signal the same as a ECU would expect from a MAF (0-5v) then it should be possible to run a computation using different inputs “from a MAP sensor for instance” cross reference a MAF/MAP table and output what the ECU is expecting. It would also be possible to upgrade to a bigger MAF and write an equation that would correct the input for the ECU.
With all this now said I have started looking at 3rd party ECU’s to allow for a longer term plans, however I may still have a go with the MAF/MAP as I need a code project to get me going