I've always heard 10 lbs. Per 1,000 rpm.........different sending units give different readings. I've got a sending unit that gives me 30 lbs. At idle and 70 lbs. At 5,000 rpm in any of my Z's I install it in. Want to buy it? I agree with Bruce....you're pressures look fine.

Thanks for all the input guys,

I think I'll just keep a close eye on it for now.