[RICK LAKE]

Stentor Lm-1 is a good basic meter but the LM-2 does both sizes of the motor at the same time live streams. You have to remember that even though you are working on just 1 cylinder it effects the rest of the motor too. Price for LM-1 about $400.00 LM-2 is about $700.00. You don't have to get the side pipes welded for bung any more LM has clamps that work almost as well and hook onto the side pipe exit. There is one thing I have learned from using an LM-1 sensor. The location is critical for getting a good mixture of exhaust gases from all cylinders on that bank. Putting the O2 sensor in the collector gives a good reading and the sensor gets hot fast but not the best mixture. Buy an EGT gun for check header pipe temps at each port also. Again buy a top of the line one. You will fine that you think you have a good tune up and be from 80f to 200f off from cylinder to cylinder. This is more with a single carb and manifold that a weber setup but still happens. I have used the LM-1, has limits but works good for learning basic tunes on a motor. You might fine one on e-bay but you will have no idea about how good the O2 sensor it working. These also need to be replaced over time because they loose there sharpness when fine tuneing. Rick L. Ps you already have the airflow meter for the tops?? I use 2 at a time for this.