weird issue today

[spikespiegel]

Was at the gas station, with 24 miles on estimated range, car all of a sudden coughs, and throws up an error like a transmission fault, car still moves but with a weird noise. I shut it off, fuel up, and restart. Cars fine, has a CEL. Check it out with a reader at home and found a few codes, System too lean in Bank 1/2, Fuel Rail pressure sensor (Pressure high before engine start).

I clear out the CEL via the reader and its all back to normal.

Was a SUPEr weird hiccup, I do have a BPM sport tune but its been flawless so far.

Coils/plugs are all done as of 5k miles ago.

Not sure if weather plays a part, but its probably the coldest i've driven the car in post tune. In touch with BPM and they suggested to wait and see what happens / if it happens again..

Any feedback appreciated if anyone has faced a similar issue..

PS car has bmc race air filters and thats the only mod besides the tune

[BMWRog]

Are you not running the tank a bit low with only an estimated 24 miles left? I was advised not to run it down to the dregs because you're more likely to suck any residual crud that could be in the bottom. That applied to any car...

[spikespiegel]

it was a bit low, i'll try to not do that again!! Not sure if that was the culprit, but it makes sense..

[arucano]

when you get that low, you can loose suction on the fuel pump in a long turn or under braking or acceleration. That theory is supported by the low fuel rail pressure code. It can damage your fuel pump doing that.

[spikespiegel]

Makes sense, I was however, crawling up on the costco gas station, at like 1mph when it happened...