Poor running

[Ab2022]

Strange thing going on with 2.0 d4d verso seems to run great with outside tempertures 14 degrees and over and the suns out soon as it drops below that and back to damp weather etc starts running abit poor rough idle bit of shaking if you hold the revs up mpg and power drop have had a new maf fitted new airfilter etc anyone have an idea?

Could it be a crack letting in air behind the map sensor causing issuses with different outside air temps/moisture?

Thanks for any help

[Hybrid21]

Faulty injector ?

[Ab2022]

Could be will keep that in mind im also thinking maybe the pipe from the airbox to the turbo intake has a small split letting some air in ... thanks for your reply