Sorry if there's already a thread on this; I haven't really found it.
2015 RAM 2500 all stock except for a RaceME Ultra I bought from Big Bang Injection and put in yesterday.
All was well until I went for a long(ish) test ride.
Half throttle acceleration, and the truck died around 70MPH.
Pulled over, started right back up, and died after about 5 seconds.
Every 3 or 4 attempts to start, it will crank and not fire.
I remember seeing a low rail pressure message either on the tuner or from the truck, but it was brief, and I haven't seen it again.
I put the stock tune back in, and no change.
I went back and forth a few times, thinking maybe the tune didn't take.
This morning, I came back to the truck and loaded the stock tune, ensuring the battery voltage stayed at/above 12.7.
It started right up and ran for about 2 minutes before dying and going back to the same, only running for maybe 5 seconds.
I did manage to observe rail pressures a few times and saw up to 6500 ish then slowly falls and dies.
At one point, with the engine off, the fuel pressure was bouncing between 50 and 65700, which makes me think maybe the pressure sensor, but that was the one time.
I spoke to RaceME, and he said speak to Big Bang Injection.
They say it's nothing with the tune.
Just trying to diagnose.
I don't know if it is the tune, not likely since the stock flash produces the same results.
Any thoughts?
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