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      10-13-2010, 04:22 PM   #54
marcel b
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Drives: F31 340i
Join Date: Jun 2009
Location: Europe

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Originally Posted by Turkeybaster115 View Post
I would add cooling ducts to my 335I, but I don't even have an oil cooler, so I don't know if that'll do any good.

FYI, since your in europe, your probably not getting very hot summers, in which to push your Z4's S54. Although germany did have some heat waves this summer, so I wonder if you "pushed it" at the ring on one of those days.
If there is no cooler, the ducts will not bring you anything. I have the power kit installed, meaning I have a much bigger airflow on the 2nd radiator on the left and on the (VK with Setrab core) oil cooler on the right.

I am comparing performance of cars in similar conditions, also on summer days in 80 degrees. Even with 59 degrees a 335 overheats. Last November I had to take care on the Ring not to overheat even with the Power Kit installed, and it was below 59 degrees outside, with parts of the track damp.