the ast two mornings my a6 has decided it doesn't like the cold between 1 to 2k rpm above this and tickover it seems fine.
It seems to feel like theres either a lack of power or runs rough.
PS vag com is not showing any errors or DTCS. I reprogrammed the ECU so it thinks its an a4 this helped a little but hasn't really done much except reduce torque as i found before.
any help i am thinking something in the cold start mechanism but on this do not know where to really start looking and poking.
It has been serviced recently and was perfectly fine till monday night.