Jeep 4.0 in 69 Barracuda

The obd1 jeep FI is "semi" adaptive, it uses the first 50 start/run cycles after being connected to battery power to adjust the A/F ratio in closed-loop mode. I have a '93 Cherokee with all the bolt-on mods and 3.55 gears on like 30" tires at most. I can feel the engine runs lean when the ecu's been reset it feels like it lost 20 HP. That thing rips btw it's a 5-speed with 230k miles, i don't intend to ever sell it just keep rebuilding it into something more capable. Repairs are sooo easy and cheap too some parts are easier to work on than my 1970 Duster.

With a 5-speed and sufficiently big exhaust in an a-body it will be tons of fun. Not necessary but if it was mine i'd put a cam in it too like the biggest one you can run on factory EFI.