The 5vref used to power the TPS and MAF is the power source I used during prototyping. It works surprisingly well too. But it wont be a permanent design change. The board does have a 5v regulator built in. I didnt install it on this board strictly for testing purposes.
@shagspeed @zeneffect Wouldnt do it any other way.
In the final run all the chips will be de-identified and the board potted. If anyone wants to try to make a reproduction that bad, they are welcome to it. Potting has the consistency of JBWeld. But the first run boards will be replaced by my new design within a years time. Staying ahead of anyone else will be easy.