m5board.comoholic (>1000 posts)
Join Date: Dec 2012
Location: New Jersey
Thanked 129 Times in 118 Posts
No load higher RPM misfires are probably going to be vanos or air measuring related. The DME swings pretty lean in no load off throttle cases.
I had a similiar issue a while back, nice and warm engine off throttle at about 4k it would start missing and drop into cut out, playing around was able to correct it by adding a hair more fueling and it went a way. So I started down the fuel air path, instead of spark, decided to run the vanos test and it failed. Turned out to be problem.
At the very least I'd run the vanos test before throwing parts at it.
2001 E36/7 MRoadster
2001 E39 M5
2010 E60 M5
2008 E90 335xi
Last edited by Ferris; 29th March 2019 at 04:47 PM.