After installing a CSF Oil Cooler designed for the E46 M3 with custom AN lines, I no longer had enough space in the lower grill to mount brake cooling ducts. Faced with this dilemma, we decided to try something a bit different and mount the ducts to the plastic skid-plate under the engine.
This is using basic NACA Ducts, Cooling Tubes and Bimmer World backing plates (E46 M3).
After 3 test days on track, one with 83* Fahrenheit temperatures, I can say that fade is definitely down from last year. Compared to last year, I am getting far less fluid boiling and have a more consistent pedal, especially going into hard braking zones. While my pad wear has not improved at all, I am also running quicker lap times due to other suspension upgrades so perhaps pushing the car harder.
Hope that others find this useful and I will report back with more data like pyrometer temperature readings as I get them.
Please pass along feedback/data if anyone has tried this setup before!
