I've tried multiple troubleshooting methods sadly, as have my mechanics.
a Dyno around here costs hundreds and therefore it would be cheaper just to see if the Dinan software could make a difference. I was thinking a different fuel map may be what is needed... hence why I'm debating flashing the ECU/DME back to stock first...

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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