Cheers for the replies lads, much appreciated, have some points to start at!
Originally Posted by rebel.ranter
Dodgy injectors and coils can cause problems in the cold.
The coils and injectors were all running well within working parameters according to INPA but I can swap over some coils from my 528 and see if that does anything!
E39 525iA Sport - Sapphire Black - SOLD
E39 528iT SE - Orient Blue - SOLD
E39 540i/A Sport - Topaz Blue