The trouble is you CANNOT use a lambda sensor to map ALS as there
will be a high amount unburnt fuel in the exhaust due to partial combustion
due to the lack of compression ratio and additional fuel required.

Besides, from my experience, ALS kills lambda sensors eventually.
(Need to use a CO meter)

When ever I have set up ALS, I use an EGT probe AFTER the turbo
and map to reduce the temperatures as weel as using the ignition timing
to control agressiveness.

Only trouble is, no matter how much fuel you put in, It wont be enough
to keep the temps down for prolonged use.

Besides, more fuel results in excessive bore wash and fouled plugs

All down to trial an error