44 at idle or engine off?There is a fuel gauge permantly on the engine, 44psi (walbro 255 fuel pump) I will try to get the sensor on ebay.
Is the thermostat housing connected to the plastic coolant tank at the side of the radiator?
follow your upper rad hose to the engine, thats your thermostaqt housing
have you tuned for the injectors? based on your post about the old maf, im sure its not calibrated for the bigger injectors. Im almost positive this is your problem. swap back to factory 19lb injectors and youll probably be fine, or buy a maf thats calibrated for 24lbs.I did unplug the IACV and the car idles fine, but lots of smoke coming out exhaust. I had the injectors changed recently 24lb excel. The car had the idling problem before I had the injectors changed. I noticed minor oil in the spark plug threads which I suspected was the O rings. ( I need to check that)
Also, cleaning or replacing the IAC is most likely a part of your solution as well