the casper transducer may not be the best choice, but did you try it on both settings to see if one was close to being right.
SM works at about 1.4 second frame rate whereas PL is closer to 25 fps and it feeds SM around 5 fps instead of 1.4 fps so you may see a lot of things that did not show up before.
Be sure that you selected the correct map sensor in the PL settings to match the map sensor in your car-either a 2 bar, or a three bar sensor....rega ls came stock with a 2 bar sensor.
three bar sensor will read close to 1.6 volts on PL with the key on but engine off
if you are close to sea level whereas the two bar sensor will read more like 2.4 volts