Hi all,
I own a 2008 BMW 550i and have already done the lower degree thermostat (logic7amps) and was wondering if there is anything else I can do to lower the coolant temperature.

With the stock thermostat, used to run 105c freeway: 105c -115c city

The logic7 one I run 99c-100c freeway
103c - 104c city (at least that’s the highest I’ve seen over a month)

My older 03 530i, runs pretty much steady 97c almost all the time.

What I would like to achieve would be to lower the city temperature to below 100c, can this be done? If so how ?

Losing MPG is not an issue, lost maybe like 0.2 MPG from stock thermostat.