I too have been thinking of adding pure oxygen to the intake of my 4.0 6cylinder jeep Wrangler. At 11 mpg I need help quick. My plan is to start with a mpg meter and an oxygen flow meter so I can slowly add the small volume of oxygen to the intake. According to my calculations, I should be able to add to the existing atmosphere intake, up to 20 cfms of oxygen at 2000 rpms which is about 70 mph. this would increase the oxygen by about 5%. This is not for racing only normal driving conditions, so of course at slower speeds there would be less volume of oxygen to keep the same 5% increase. Also, I have been using oxygen in welding for 35+ years and don't understand the inordinate fear of using oxygen. I haven't seen anyone blow up. I did start a fire one time in a field with a cutting torch but thats why you have a fire extinguisher on hand.
