Does the IMS Guardian work?

[chipmunk]

My Boxster went in today to Wrightune to have the IMS Guardian fitted - if you have a 24k or later service done then you get free fitting. I needed a major service so decided to do the two together.

The car has done 69k so (I am led to believe) is less at risk from IMS failure - none the less I will be happier knowing that there is some form of warning in case the bearing starts to self destruct.