Originally Posted By cudadon
I have and reccomend the LM 2. Having the rpm on the graph you can check afr/lambda readings at the top of the gear, the bottom etc.
You can also record water temp.
Don
I like mine, used it the first time this season and told me a lot, only thing is I am going to weld the bung in this winter and put the clamp in the box to use on other peoples cars.

Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.