MORE fuel injector issues (plus new conspiracy theory)

[Ekalb]

I will start by saying that our 2013 special ordered X5 5.0 MSport is hands down the worst car I have ever owned. I have owned 8 BMW's and currently own two others and this not up to BMW's standards. Dealing with BMWNA has been equally as frustrating. It is light years worse than the issues we experienced with the Supercharged Range Rover we traded in for it.


It has now been in for service SIX TIMES since March for an "engine malfunction warning". It has been in for other issues as well, but we will focus on the engine for now. Until this most recent trip to the dealer they would always change out a few (or all) injectors and send me on my way a day or two later. This past time I was sent on my way with a 750i loaner that we ended up having for 29 days due to an ongoing case with BMW where I asked to get my lease terminated to no avail. The 750i started exhibiting a lot of the same stuttering, jerking, and bucking symptoms at 800 miles on the odometer that our x5 has always dealt with. I have no doubt that the 750i is not far away form all the same fixes our X5 needed. Our car has 14,xxx miles on it.



When we got the car back from service last week, my wife and I both noticed after driving it separately and not discussing it ahead of time that the engine very clearly feels different from before. It feels like they dumbed down the tune on it and a lot of the torque seems to have gone missing. We do drive our "ultimate driving machine" fairly aggressively, but nothing out of the ordinary, so we both know how the car used to feel though out the powerband. Is it possible that a fix they have come up with for the 5.0's that are eating fuel injectors regularly is to adjust the output of the engine to a noticeable degree? It sounds the same as before, but feels like a struggling 6 cylinder to get the car moving. The seat of the pants torque feel from before seems absolutely different. At first I figured it was just that we didn't have the car for a month and that we just had not gotten re-accustomed to it, but I'm not so sure.



any thoughts on this?