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Looking at the test data and the information you've provided, I see 3 possible, if not combined issues.
1. Your timing is off. The S65 is tricky to be honest. I've done it twice now and don't enjoy a minute of it.
2. Your vanos adjusting units are defective, or being mechanically impeded.
3. The vanos seals are defective and bleeding off oil pressure.
I'm willing to bet you have a combination of these issues. It's not impossible to have clogged vanos adjusters.
My recommendation is to replace all 4 adjuster units, their seals, vanos bolts and re-time the engine.
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2014 M5 6MT  |