For some reason or an other then this second protection plate (among other things, protects the automatic gear casing and helps to cool it down) was newer fitted under my car from the factury. When I finally found a good used protection plate for the automatic I decided to buy it and see what would happen. I was plesently surprised at the positiv result. The fuel consumption dropped a bit, the car feels somehow more "tight" and solid and more stable at high speed (ower 100 mph.). It's a shame I did not do this fix earlyer it makes a big difference in driving plesur.