I reset my ecu last night and it was running great. 2-4th I was hitting 12-14psi. The same was for this morning. I just got back from lunch and i could only get 8-10 in 3rd&4th. ALso, my gauge now reads-24 @ idle. It was reading aorund -21. And it doesn't zero when I turn off the car. What could of happened??? please help