Quote from RINGA re. the cooling pack:-
"I'm sure the factory did proper testing".
If so, this will be the only thing on the M3W that they did test properly.
Having said that, I still love the car and the "grin factor" is still there.
Only slightly tongue in cheek, as you will recall a number of graphs that the factory issued showing the engine temps on a drive through Malvern and around the more congested roads, both with and without Cooling Kit. Whilst they tried to argue that it gave an increase in power (which is clearly impossible), what it did do was help lessen the power reduction by the ECU when the engine got too hot, as it approached skipfire temperature levels.
Either way, my point was that a hoofing great fan that close to the engine will likely resist and overcome the air flow caused by low speed car movement forward.
Still gonna make my own though!