Quote:
Originally Posted by wayman519
You should measure your vanos cam and ess actual vs commanded positions with inpa. I had wavey acceleration issues with brand new vaico solenoids and brand new pierburg solenoids. Genuine bmw solenoids solves my issue. The genuine vanos solenoid has a very tight tolerance from my measurements.
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it seems it was the same situation here
yesterday i replaced the vaico with oem solenoids, and until now i cant feel wavy acceleration
thanks everyone here for helping