Car jerking during cold start rpm unstabilized

[Raymi]

Hi sfu

I am driving f30 316 year 2015 mil about 183km
Recently I have encountered this issue during cold start I noticed that the rpm is unstable car start jerking after a few minutes it’s gone
Could anyone advice what is the issue here
Spark plug and ignition just changed
Mod on bm3 stage 1
Your professional input is much appreciated

 

[Codewerx]

Any better if reverted to stock on your map ?

 

[Raymi]

Any better if reverted to stock on your map ?

Have yet to revert to stock on my map