Look into megasquirt. I did a completely custom setup with it years ago and it was great. Put a few thousands miles on the car, as reliable as OEM. Built the th

Look into megasquirt. I did a completely custom setup with it years ago and it was great. Put a few thousands miles on the car, as reliable as OEM. Built the thing from a blank citruit board, built my own wideband controller too. Was damn surprised that everything worked. Support was pretty good for custom sensors, only problem is your knowledge has to run damn deep with these things before you can get the engine to start :) I had wideband autotune for O2, idle control, knock retard, coolant and air temp compensation, basically every original sensor from the motor and a few extras I bolted on worked great Of course, you need to know how to get an engine running from a blank fuel and spark map...And blank enrichment/retard and aux maps for all these sensors. Anyways, was good fun. Lot more interesting than the toy stuff people are doing with Arduinos for the most part