Quote:
Originally Posted by Beemw335
2011+ M3s tend to read higher from what I have been seeing. Do you guys have any idea why? has anything been changed on the newer models??
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I've been meaning to start a new thread on this. The 2011s are definitely seeing higher numbers than earlier models.
We have a few theories on this. One can be that now that E9X M3 production is coming to a close, BMW is being a bit less conservative (can be in software, tolerances, or both) than seen during original vehicle launch.
Here's one of the more extreme examples seen on an MY08 M3:
This particular M3 dynoed very low from the beginning, coming to us in preparation for supercharging. With a quick look through service records and confirmed by autologic - it appeared that this M3 never returned to the dealership for updates since purchased.
While still on the dyno, both the DME and DCT were brought up to date with 2.45 and run again - seeing gains throughout the entire powerband.
Again, this is only a theory. Simply food for thought.