[cwmcobra]

Just curious.....is your pressure gauge liquid filled? I have observed the same situation in my car and consulted with Aeromotive on it since I'm using their fuel system. They tell me that many liquid filled gauges will read lower pressure as they heat up when, in fact, the pressure is really at the original (cold) level. I'm going to replace my liquid filled gage with a good AutoMeter mechanical gage. Aeromotive is confident that will solve my problem.

Now, if your gauge is not liquid-filled, disregard this suggestion and proceed with a design of experiments to determine the root cause of the problem. Engineering 101.....

Good luck!

Chuck