Civdiv, I am thinking to add one as you did to get rid of the harsh 2-1 downshift which seems to happen only when the temperature is above 97 degrees Celsius. That's my alternative after unsuccessfully rebuilding the tranny and I am not willing to spend another 5K to have a new tranny installed.
What are your recommendations for this project? How did you mounted it on the radiator? Is that the best place to install it or you would do it different if you have to do it again? What about the oil pressure, what connectors did you use to be support that pressure.
Thanks,

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4.8is 2004 imola red
4.8is 2005 Black on Black - DINAN/2 sold
4.4 2004 X5
2003 330xi
2008 328xi - sold
4.4 2000 X5 - sold