I have installed an electrolyzer and scrubber on my 87 wrangler w/ a 4.2 6 cyl w/ weber carb. So far so good, definate increase in MPG and performance gains. What is the difference between a gas install and diesel install? Anything special needed or is the set-up totally different? I have been told that diesel engines have no vacuum, is this true? If so how is the gas injected and where? Any help would be greatly appreciated. Happy Holidays.