Running smooth and fast!!!

[StanF18]

Originally Posted by ArNarX5

...I have noticed that on hot days the car seems to not run as "powerful" as on cold days... I've owned other BMWs in the past but they were 6's. Anyone experience the same with their X? 6 or 8.

This is normal. Cold air is denser, so on a cold day there is more oxygen available per stroke (in the chamber) for igniting with the fuel . This is why folks install cold air intakes, to provide a "shielding" from the heat of the engine.

[faz]

Originally Posted by jst2878

I do a burnout out of the dealerships when I purchase a new car. This let's the ecu know that I mean business

Thanks for the laugh.

[tonycajjo]

Originally Posted by jst2878

I do a burnout out of the dealerships when I purchase a new car. This let's the ecu know that I mean business

followed by removal of the battery for an hour to let the transmission know "i'm sorry"

...let the ecu know i mean business! haha!