I guess it back to the dry cell with neutral plates and efie is the only way. This car this he installed in is an old car and properly don't have any electronics air to gas mixture so he doesn't need to throw away the oxygen anyway.
You can split a "dry cell". There are instructions on YouTube.

http://www.youtube.com/watch?v=7wUg5...embedded#at=16

http://www.youtube.com/watch?v=AC3t8...layer_embedded

Watch all his video before trying this. vipond50