blows cool-ish no change from city to highway. my neighbor, a residential/commercial heating and cooling tech was going to refill it but when he hooked up his gauges he said the suction and pressure were excellent and it did not need gas. does this system have a line filter that could be the issue? any troubleshooting I can do without the fancy AC tools to find
If the pressures are excellent, I would be inclined to look elsewhere in all honesty. The only filter like device I am aware of is the orifice tube, but if that was clogged up, that would throw the pressure numbers off, and your friend would have seen that. What pressures did your friend find on the high and low side. What is good for residential may not be good for automotive applications.
Puddle under the car simply indicates that the evaporator is colder than dew point, and the water is draining as it should. Are both sides the same temp? If you go full hot to full cold, does it change as it should?