The LM-1 is a portable unit so it very easy to hook up if all you want to see is the A/F ratio. Plug it in to the cigarette lighter socket for power and run the other cable with the oxygen out the back glass and up the tail pipe. Clamp it really good and your ready to read A/F ratios. They sell a special clamp for this buts $70, a simple spring clamp works fine for me. Another way to is to weld an O2 bung into your exhaust if you want a more permanent solution. Hooking up the RPM converter is a little more complicated but I'm not going to use it on the KJ. You can connect to a laptop and see it real time or look up a previous sample. You can use just about any sensor on the engine to give you information and it will incorporate that into the graph. So you can see the relationship between throttle position, a/f ratio, rpm and whatever else is important to you.
http://www.innovatemotorsports.com/
check it out, lots of good stuff if youre into knowing how your engine is running. I actuallly bought this thing to tune my brother-in-laws new car. Its a 93 Toyota MR2 turbo that has been HEAVILY modified and he knows very little about cars. Now he thinks he is going to drive this race car on a daily basis. Unfortunately I am the only one for miles and miles that has real experience with heavily modified turbo import engines and won't charge $1700+ as he was quoted to fix the problem it has. Yeah, he blew it up in the first week!
Someday when I can get back to my 48 CJ2A turbo project I will use it to tune the old flat head.[/list]
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