[ZM2]

Why would I let the coolant and oil get hot before getting on track? It goes straight into DSC off mode, so I’m usually hitting the track with 160-170F coolant and 190-195F oil.

The stock M2 oil thermostat opens below 200F in Sport/Sport+/DSC off without the need for a different thermostat. Those guys you linked to proved exactly my point—the Moss sits at 185F. That’s not much lower than the stock cooling program on M cars in Sport mode. I have no idea why guys with M cars get these thermostats—has never made sense.

The BMS bypass is different and should have more of an impact for the track.

I don’t put a lot of weight in the HH review without logs or track time. The do88 unit does look better, it’s easier than an IC swap, and I found a good deal on it ($515), so we’ll give it a shot.

I did the hood and the Evo3 at the same time, so hard to know which is impacting airflow worse. Logic would say the IC, but some testing would be needed.