I remember a while back there was a question on how to log with an LM-1 and integrate it into a Datamaster log. I don't remember if there was any resoloution, but I've got an idea. I've got a '94 C4 and it is equiped with the third o2 sensor that would eventually become the catalyst monitor. It's been pretty much useless as it just mimmicks the o2 sensor just ahead of it. The data from it is available with a scan tool and Datamaster sees it as "O2b". Since it is essentially a 0v-1v input right into the PCM, I thought it would be the perfect canidate to hook the LM-1s analog output up too. I configured the LM-1 to output a linear 10.0:1-20.0:1 as 0-1v. I.e., 450mv=14.5, 125mv=12.5, etc. So far, it seems to be working perfectly. I don't know how well it's calibrated, but I did have the LM-1 output a fixed voltage and the data stream indicated the same. So far I've set the LM-1 to "instant" response. The graph shows ALOT of activity and could stand to be filtered. I was thinking of setting the output to 1/12, or 1/6 speed and see if that improves things. It's very convient to do it this way. I even powered the LM-1 off the 12v that's present for the old o2s heater. Made a simple jumper harness and it's all plug an play. Don't know if this is only possible on the Y body, but it's worth checking out.
Hope this helps someone.
Scott