My formula was running fine when i opened it up on the highway floated the headers and burned oil for a little while.....the car died on me at the light and i got started enough to get back home....i changed the fuel filter and the car ran fine.....then when it started to get colder outside(65-75) the car would have a hard time starting....yesterday i finally got it started and the car died on me....fuel pressure is 44 and drops to 41 when i try to start it....any helpfull inquiries would be greatly appreciated....thinking maybe the opti??????????

Thats good fuel pressure. Check all the Opti connections. See if you have good spark at the plug. Take out one plug,stick it in the plug wire & ground it to the head and have someone turn the engine over. There should be a nice blue spark. If not you have ignition issues. Also,try unplugging the MAF sensor and see if it will run. If it does the MAF is bad.

so if i unplug the maf and it turns on it is bad????

nevermind i read it wrong...thanks i will try this and get back....much appreciated