I've been working on designing a bi-fuel System for my 2.5 TJ. Basically I was thinking about making an entire fuel system for the alcohol that merges with the gasoline at a 'T' Valve to switch between the fuels, just before the injectors. I figure that injectors that are 40% bigger should work(not sure what would work, suggestions?) . I was thinking about some Champion RC14 spark plugs for the alcohol. Because the alcohol burns slower I think I need some ingnition advancement (20 degrees?), is there an aftermarket chip that can re-time ignition, or is a shop the best bet? I'm still kicking around a few ideas, but a write-up will follow. FYI- the gas part is basically used to warm up the engine, with the 200-proof ethanol handling the majority of the work. Thanks for the help.