patrick at ussportcraft said to cut the fuel vent tubeto inside engine cowling to prevent negative air pressure in the slipstream. also, there is a fuel delivery modification that has more valves and tubing and cost like 1500 dollars. i plaved tape over the fuel vent line and that seemed to reduce low pressure at least keep it at 3.0. i use analogue gauges. i also installed a radiator hose with no metal thermastat to aid engine cooling and that seems to help fuel pressure. when its 50 degrees out, the cylinder head temps are about 165 degrees. i installed small aluminum strips in front of radiator and got temp back up to 195. the factory winterization plate is too much and will wait for 30 degrees or lower to use that. i made a small strip for oil cooler to help that stay in green too. thanks