[Ilyam5]

There is not much info on that pack, but judging from 8 series technical,docs on the engine. It says:

"An additional cooling package is used for optimum cooling. This consists of an additional upstream coolant radiator including front spoiler lip."

It looks from the drawing like m3 radiator under the front bumper

It is both cool and not cool. It aids in engine cooling but presents major issues on day to day driving. M3 guys are installing protectors for road debry at delivery.
Any puncture to that radiator leads to rapid oil evacuation and destroys the engine with no insurance coverage.
Would be nice to know before ordering since protectors are probably not available untill m3 comes out