So I finally picked up my 550I last week and drove right to get the car dyno'd. My plan was to get it dyno'd go get the Dinan installed and then dyno it again the same day. All of this was on the day I picked it up and before someone says I need to break in the engine first I did ED so the car was plenty broken in. I also got the oil changed right after I picked it up and before the dyno. This was on a dynojet so the numbers are a little higher than had I used a mustang or some other dyno but this shop was willing to dyno me till 11pm that day and was right next to global bmw who was doing the dinan so it worked. Overall I'm pretty pleased with the power curve and the torque on this car is crazy impressive. It was about 4pm and about 40 degrees when it was done. I messed the first run up as the car fights you alittle about being dyno'd and we had to overcome all the little nanny's first. I would have done another one to have three good runs to compare but the car was heat soaked after the last one and as I said i was on a tight schedule to get the results the same day. This car gets hottttt when you get on it and it would definitely benefit from some additional cooling. I never got to install the Dinan or do a follow up dyno as I was rear ended right after leaving the shop and now my car sits at magnum collision getting repaired. Anyways here is the dyno graph enjoy! Max HP was 386 and Torque was 439.

Click here to enlarge