I would take a hard look at the cam and crank sensors- these are just a magnetic pickup, and if you have a bad one, they will not pick up a clean signal at high RPM. It seems to me if the trigger is high RPM. they should be able to look at the data stream and see the misfire trigger. Also, what is fuel pressure and volume? Maybe you have a fuel pump going south.

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Dave

'05 325xi
'10 E70 35d
'85 911 Carrera
'66 911 Work in progress
'91 Chevy C1500
'95 Jeep Cherokee
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