I decided to do a fuel pressure test on my '08 XP today. No issues at all, and she has 280 hours on her. I know, I know, she's just about worn out..... I have about 41 psi at idle, and maintains 40 as high as I care to rev it with no load. However, at WOT at about 45 mph (short parking lot) it does get down to about 35 psi. Is there a minimum pressure that you guys of knowledge would replace a fuel pump? Am I concerned for nothing? Thanks in advance. God bless.