In Reply to: Let's bring this to BMW NA attention as a group... posted by Kenneth Lee on August 12, 1999 at 19:34:50:
This happens with our without the DSC, it happens from any gear to any gear in the 4-5k rpm range.
I think if the CAT was plugged it would be more throughout the power band.
I would like to see BMW NA address this issue.
I have adyno sheep from ERT that shows and explains that there is a known significant HP/Torgue loss in this 4-5k range. They used a 540i 6speed for testing.
If they know this then I assume it must be known by BMW.