Quote:
Originally Posted by DaveChapin
I think it also has something to do with having enough juice to safely run cooling fans for up to several minutes after the car has stopped. There are threads around here that this was important for this generation of high output turbocharged engines bmw has been using recently.
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There might be some truth to that. Fans don't draw as much power as heating coils inside the CAT though. The X50i fan would run just as long I imagine, but it only has 1 battery. I'm waiting for iND to confirm if our cars have e-CAT as expected or not.
Coming from an F80 M3, I'm shocked how long the F85 fan runs after I parked. The M3's fan didn't run much, if it does at all after it parks.