Well a few months back i was having problems with my 95 z28. I thought it was the opti. The car would start right up drive for a little bit and then stall out with no codes or check engine lights. Well just turning the key to the on position the pressure was at about 33psi. Which i believe is about 10psi to low. So, Could this be my problem for sure? Fuel pumps aren't too expensive and there seems to be something wrong with this one anyways so if i change it and it's still the opti I'm not really gonna be mad. The car only has 38k original miles and the car is all stock. Tomorrow We are going to take the car out for a ride with it hooked up and see what it is at. Thanks for any help. Justin