Dennis5374

This is a 98 z28 single turbo Holley hp efi car. so the car battery died this winter, I charged the battery, fired it up and it took off no problem . Went out for a cruise and noticed it was down on power substantially, I'm talking 50-60% of what it was when I put it up. Anyways I hooked up my LCD screen , and got into the timing and fuel tables , and the graphs had reset to 108 kpa .. wtf happened ?! I was hitting 200 kpa when I put the car up last winter.