Dan
I have one of the first round FASS 150 on my 01. I love the pump have not had any real issues out of it. The one problem i do have and it started a little over a year ago is it will build pressure when at idle for extended period of time or pulling a long hill with a load. Where i see it the most is in a local parade 1st gear for about 3 miles pressure had gotton up to 32 psi. Take it down the road at speed for 20 mins back down to 15psi. What does this? It will on ocassion drop down to 10 or 11 psi but normal is around 15.