replied to the thread N54 AT: Looking for Cooling Upgrades
" [QUOTE=Autobahn335i;457064]I have the ER Sports Oilcooler, the AR oilcooler in front of the radiator and the PPK radiator in the driver side footwell.
My observations are the following: The AR OC won't do much. At the time of purchase there were no other options around but now we namely can get the ER Sports OC. And THAT is a huge improvement over stock! I haven't had oil temp issues ever since I got that upgrade.
Yet, my car was getting power reduced on the racetrack due to high coolant temps. Which lead me to installing the PPK radiator. And there is no certain verdict about that product. What I did notice is that coolant temps would go down faster again with this radiator. However peak temps would still be a problem and can lead to power reduction within 10 minutes of hard tracking in summer heat! Clearly, for street driving, none of this will be an issue anymore with all these upgrades but on the track it sure is. The root problem is that the 6AT is connected to the main radiator and the lower 3 rows of the core are used as a heat exchanger with the engine coolant. This is good to get engine temps to operating range faster. But it ucks at the track where the hot transmission oil will heat the coolant up even further!
Which leads me to my next project, which should be done shortly and which WILL solve this problem once and for all: a dedicated transmission cooler.
Here's what needs to be done: "
05-16-2013, 06:54 AM