Well I completed my Electrolyzer after several revisions. And I have PICTURES!!!!.
http://i43.photobucket.com/albums/e399/estoltz/hho1.jpg
http://i43.photobucket.com/albums/e399/estoltz/hho2.jpg
The design as mentioned before is a 3 inch PVC with stainless steel wire wrapped around a pair if wooden dowels. I tested it off the car and got some bubbling. Current Catalyst to water ratio was 3TSP to a gallon. I got some bubbling. SoCalRT, how much bubbling should I be getting from an open electrolyzer on the bench.
I am not even going to venture to build a MAP/O2 sensor enhancer. I'm going to go ahead and purchase on this one I think.