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      02-18-2021, 12:04 PM   #6
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Drives: 2006 E90 330i BSM 6MT
Join Date: Dec 2010
Location: Toronto

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Originally Posted by aphael View Post
Hey there, I wanted to know if the 328i stock radiator is good enough for track. I know that some people here have added oil coolers but I do not see anybody talking about aftermarket aluminum radiators at least for the n52 motor.

I plan on running thunderhill, and was wondering if its necessary during the summer where temps can be 100f.
I've tracked my 330i (still a N52) over 15 times and only experienced a high temp warning once in my life late in a 30 minute session where I was really going hard. Now my temps aren't as bad as yours due to being in CAD but if you're just looking to have fun on a few HPDE to get your feet wet I wouldn't worry too much. If you're taking competition more serious its not a bad idea and one that I have on my to do list in the future due to how plug and play a factory oil cooler option is.
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