A 10 degree difference in ambient temps is a very significant different. I don't think comparing the data is relevant. On my s/c'd E46, I notice a significant difference in power and oil temps in 100 degree weather vrs 80 degree and I'm intercooled with w/a injection. I'm sure your car was badly heat soaked. I don't see how your car cannot get quickly heat soaked in 100 degree weather without an intercooler. My E90 can barely withstand a 20 minute DE session and its NA.
Is that good for your car? I'm sure it isn't good over the long term. I know in the past, ESS has highly recommended an intercooler for cars that are run in hotter climates.
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2018 F30 320iX Melbourne Red
2011 E90 M3 Monte Carlo Blue
2004 E46 M3 Imola Red
2000 E36/7 Z3 Steel Blue
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