I been away from the HHO scene for over a year due to winter and having surgery on my shoulder. But I am back in my shop now and fixing to upgrade the Mazda again. One thing I found out the year before last was if you mount your dry cell in the right place it will stay cool. Mine, behind the front bumper at the bottom of the radiator. Mix never got over 120 degrees. My problem was trying to figure out the right mix to prevent freezing. The other thing was the vapor to the motor and the new bubbler kept getting sucked dry after shut down. System hooked up to ignition circuit so when key off, system off. This year I will be doing two things to this truck. One is more HP and the other is MPG. Been trying to find a good efie plans to build with the right parts list and where to aquire them. O2 extenders don't work. Making your motor breathe is something else others don't talk about. Been a Mechanic for 40yrs and a sheet metal and machinist for 33yrs. I am using 304 sstl plates cause of the ready access to the material. My generator is 8in square with 21 plates and I keep my voltage at 10 amps. Going to mount into dash this year. It is called the Mazda Project. It is going from B3000 to Bxtreme. Your comment and ideas are very welcome. I will be posting pics later and I will keep a log and put all my info into manual form for others who come to this fight against the dependancy of foreign oil. $4+ a gal is too much for any of us to bear. Plus we need to show Mythbusters they ain't as smart as they think they are.