just finished putting everything back together after a year. started it up and runs fine but it is definately running rich. after i plug in eec tuner, car barely runs and then is fine and is bad again. i thought it was the chip so i took i to a shop to have them make one. after installing their chip it does the same. am i missing something here? finally i do have a check engine light and it is referencing low voltage at the maf. i tried a different maf sensor and i get the same thing. i need some help... thanks