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Old 09-20-2011, 01:51 AM   #18
Rockyminator
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Join Date: Jan 2011
Location: Portland Oregon
Posts: 478
My Ride: HPF Stage 2.5 M3
So what happens if the Vanos is not replaced/rebuilt and it fails? According to John at HPF, the Vanos unit is suppose to be louder than normal due to the HPF's EMS. In other words the cars DME isn't able to quiet the Vanos unit down like it does in an M3 with no turbo. They also said the noise is usually louder with the rebuilt motors, stage 2.5 and up. Gave me peace of mind but I'm still afraid it will fail. What happens if the Vanos does fail?
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HPF Stage 2.5 BMW M3
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