bm3 flashed fuel pump noise

[Smee]

So recently flashed bm3 and I seem to have an issue.

I am getting 5 seconds of the same lpfp noise you get during flashing right after start up.

I have reflashed to stock. tried an online recode. tried different maps. the noise is there always.

I ran a datalog for start up and I think I can see it in the logs too.

logged to PTF, this is what i got back

Dzenan Becic commented:
Hi lee keene,
Stock is always 100% OEM Stock. We have no other data for stock other than factory data which matches the software IDs on your DME, that's all. On startup its normal to see a spike in LPFP pressure as the pump turns on. The S55 cars have what's called a brushless fuel pump, very high flow.

Halim proTUNING Freaks
It's the LPFP that does this noise for sure.
Well it's not tuning related at all as it also does it on the stock tune.



anyone have any ideas?



Log - filter everything out and just leave the LPFP

http://www.bootmod3.net/log?id=5ca4ea05c090c651349b3ee7


in this video can hear it best car starts and then it stops (engine remains running)