It's wintertime here as you all know and almost all tuners stopped any mapping activities saying that in temperatures below +10 degrees it's impossible to do it properly. My problem is if it's true or is it just lack of ability to write proper temperature correction maps?

Also question connected to this one. Is very cold temperature safe for cars tuned lets say in UK that never been tested in such temperatures? Let's say my STG1 Escos in -30 schould the fueling be spot on or schould it be checked?