Oopsie, I was just posting on a 4.6 thread. I have the 2002 catalog that lists HP and Torque improvements by mod for the 4.4. Everything that is Dinan will either have the Dinan D on it or Dinan on it. Is Dinan on the airbox or MAF? The improvement with just exhaust would be hard to measure.
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 X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas
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