So I have to ask, even thou I believe I know the answer...
I put the Dinan CAI on the 4.4 and right away, I will admit, I felt more powerful acceleration, especially in mid RPM range.
BUT now after 2 weeks of using it, the power seems to not be so responsive...
Is it that I'm just used to it, OR is it that the vehicle's computer modified something to adjust for the supposed extra air intake and therefore reverting the acceleration back to where it was with the stock air box?

Is this why the Dinan software 2 is worth the upgrade as it modifies something to do with extra air intake?

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I swear, my cars are like a girlfriend.
Sometimes its a rough ride, sometimes its smooth motorin'.
Sometimes she doesnt like how i treat her and sometimes i dont like how she behaves.
BUT at the end of the day, she loves it when I am inside her.

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'91 850i
'05 X5 4.4i
'09 Clubman S