Technical Another multiair brick wanting to meet his maker?

[brokencr0ss]

Hi boys,

Rebuilt engine with less than 2k km with forged internals.
Reused the multiair brick from 2017 with about 50k km (it’s already the second one).



Does it usually overnight (cold weather) or some 3-4 hours of sitting, also in cold weather.
Multiair strainer was always changed every other year and was obviously changed when the engine was rebuilt.
Currently running Motul 8100 5w40 X-Clean Gen2.
No oil pressure light nor CEL whatsoever. Car runs fine, no misfires.
What do you think?

 

[Zardo]

Car runs fine, no misfires.
What do you think?

what's the question?

 

[brokencr0ss]

what's the question?

The brief dieseling starting. From what I can recall it never did this.

 

[Zardo]

If it's a rebuild engine, the ECU might have to relearn its parameters. Did you reset the ECU with an OBD-tool?

 

[brokencr0ss]

If it's a rebuild engine, the ECU might have to relearn its parameters. Did you reset the ECU with an OBD-tool?

Actually I flashed a stock map from another car, since the car was remapped before and I didn’t have the stock map. This with the intent of doing the break-in with stock parameters and then remapping afterwards.
Might try doing a uniair dispersion relearn to see if it solves it.