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      06-11-2013, 02:02 PM   #935
raceyBMW
king of the hills
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Drives: 2011 M3 w/ESS55, 2001 540i/6
Join Date: Dec 2006
Location: Arvada, CO

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Garage List
2001 BMW 540i/6  [8.17]
1994 530i  [9.00]
2007 335i Coupe  [8.37]
I should probably update on something I tried a couple weeks ago. Recent track days before this one have been a futile attempt to get a couple good sessions in before I go limp mode due to Coolant temps (335i, AT).

This last week I tried 100% water + water wetter instead of coolant, and that seemed to help a ton with the coolant temps. Granted I was still running in the 245°F range, but only got a coolant warning once, and never went into full limp mode. Was a 90+°F day too, so was pleased with the performance. For info, I have FBO (no meth) with Cobb AP. I put Cobb in Stage 1 Drive just to lower boost to put less heat into the system.

My oil temps run into the 290°F range, but I never limp due to those.

I also am curious on the Fog light delete, I bet it will help a couple degrees on your oil temps at the track.
Appreciate 0