[pHScale]

Hi guys, need some help on this.
I have 2013 bmw activehybrid 3 with n55 engine, currently have fault for lean mixture.
118001 - Mixture too lean
11CF30 - Mixture control- group error.
I’m currently running bootmod stage 2 with downpipe, bov valve, 1 step colder spark plugs.
Car has been smoke tested 3 times, pcv valve replaced, exhaust checked for leaks, maf sensor checked, all looking fine.
The main problem is that on cold start the car is trying to die once it hits the idle speed, it gets better when the car warms up a little bit and start driving.
Any help appreciated. Thank you.