[sammyg2]

With the O2 sensor plugged in and functioning correctly, it will control the mixture corrctly, but at full throttle it is designed to go richer.
One thing I did was to hook up a hobbs switch that senses positive intake manifold pressure (turbo) and basically grounds the O2 sensor wire to the chassis under boost. that forces the lambda brain to tell the FV to go richer.
That will provide enough fuel for 7 psi boost, maybe a little higher if you are intercooled but not much. If you plan to go much higher than that, you will need to do something to provide more fuel or to reduce ignition timing, or both.
There comes a point (below 12 to 1) where more fuel will slow the burn and reduce the chance of pinging, but gives away torque, horsepower and economy.
In that case you would be better off with retarded timing instead of going too rich.
if your plan is to run more than 7 or 8 psi boost with pump gas you will have to either get creative or live on the ragged edge.

I just hooked up my LM-1 and am still getting familiar with all the functions so I haven't yet figured out exactly how to use it to re-program the fuel mapping on CIS.
My plan if I ever go higher with the boost will be to control pinging with timing, not extra fuel.