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      05-13-2025, 12:29 PM   #16
Lienrocs
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Drives: E92 M3, M4 GTS, HP4
Join Date: May 2017
Location: Austin

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Quote:
Originally Posted by omgzirra_exe View Post
i don't think poor heat extraction is the problem, but i do think COTA is the problem lol.

180F while cruising is 30F below standard operating temp.

but something somewhere isn't working... i just can't pin point it from your provided list of replaced parts.


Also what are you using to log the temps?
All installed in the last several hundred miles and all brand new:

OE GT4 water pump.
OE thermostat.
Do88 radiator
Do88 PS cooler
Do88 dct cooler
Litchfield oil cooler
New ac condenser (also pulled it entirely and the car still overheated)
Epic oil thermostat delete (an lines and improved racing 185 degree full flow thermostat installed)

Zebulon splitter, no factory under tray but all radiator seals in front and behind the rad are in place and brand new.

Factory ambient sensor reading normal.

The fan kicks on after the thermostat is open. I don’t know exactly when it should come on but it doesn’t seem out of sync with common sense.
Appreciate 1