I took that LH module out, used "Quick Detailer" to go over some parts of the car and put it back in.
No difference - still slower once the engine is hot. One thing for sure though it doesn't do the same when the weather's nicer (i.e late at night when it's not quite 80*F outside)..
and in winter it's really powerful all the time
- not even a 5.0
ps. I made myself feel good about the M119 by driving a Passat 1.8T.. :p