I have a 2008 200 HPDI that is just recently past the breakin period. I was running wot at 24 psi. The last two times I've taken it out it is only at 17 psi at WOT. It also seems that I have lost about 5 mph and a little on the rpms as well. The water pressure at 4000 rpms is only around 11 psi. Took it the dealer and he said he couldn't find anything wrong. Do these numbers sound out of whack and is it normal for the water pressure to drop without making any changes.