SOmeone got a complett blueprint of the circuitboard to the ECU?

 

Its a RX7 1988 (s4) Turbo2

 

nope

and chances are if they did it would be for a N333 US spec ECU

 

hmm okey, now the ecu actually does seem to work :P

 

It's based on Bosch's L-Jetronic fuel injection. Are you interested in the hardware or software aspect of it? eg. There was a ECU reverse engineering project, I don't know if it's still going on. At one point I downloaded the assembly code from it. I think actual processor is a Hitachi or something like that, but it's not dissimilar from Motorola 68xx.