Thanks for the tips Ldub!

I just went down to Autozone to trade in the MAF and, while they had one waiting for me, their comuter system was out and they couldn't process the return, so I have to go back tomorrow (to pick up the second front brake rotor they didn't have on the shelf).

If that doesn't do the trick I'll have my mechanic check all of the hoses again.

Has anyone ever found an adjustable fuel pressure regulator for the VX?