Look in to megasquirt. It looks intimidating and cobbled together but it the cheapest option for FI and it's actually pretty well supported. and there is also an auto transmission controller module so you could program the entire drive train with it. You could even run MS parallel with the stock ECU to get the stock jeep gauge cluster to work. MS would handle all the engine stuff and the stock computer just running the gauges.
after doing a little research i stumbled upon this thread, dude turboed his yj for like $500, this is what he said abut fuel: My turbo is sized really good for the motor, I would say that at normal crusing speed there is no lag at all, and yes it is a home made kit. I was going to intercool it but after thinking about it I opted not to because an intercooler will just take up space and moving a 2 mph on the trail, the IC will not do a thing. Instead I will be running a water/meth injection setup. That way everytime i hit enough boost i will be a nice cool dense air charge. Im running 7psi now, the water/meth will come on a 4psi. no chips or computer mods. just used a 12:1 FMU and a booster pump. jeep pulls really hard actaully and is really nice to drive. Im located in central CT, Newington to be exact. i'll get the numbers up as soon as i get to the dyno
i found the fmu online at a great price... now i just have to find the right booster pump, whats your thoughts on this rout? thanks
daily driver, if I roll it, im SCREWED!