Fuel pressure is good, the pump primes to 42 psi when I first turn the key to on then as the car pulls vacuum on start, it lowers to 36, then the car dies,
I bought the ms3x from DIYAutotune, already built. Im using the stock coolant temp already calibrated, and a GM IAT sensor.
The car starts strong, better than before when it had the stock Bosch fuel injection, but then it just dies.
If I open the throttle it goes up and down from 300ish rpm to like 2200ish rpm, if I close the throttle it dies.