I bought my thermostat from an indie manufacturer called BAVlogic, the guy is very knowledgeable and can be caught on his business phone number for a chat to ask/answer questions. He buys an OEM bmw thermostat, takes it apart and re-calibrates it, then re-assembles it - what ever special process that is. So yes I have one in my N62 and it works as advertised. The actual temperature that reported is higher and that's what expected in the computer programming. But measuring the temperature of the output hoses with a temperature gun shows running at 90 degrees.
His website also offers a great deal of tips and knowledge.
https://www.bavlogic.com/?p=4035