Quote:
Originally Posted by JCL
Never heard any pinging on any recent BMW, on 87 or 89. The DME is operating at the speed of sound; there isn't an adaptation period in my experience.
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+1...I've run tanks full of 87 & 89 through our '01, in the past decade; never an unusual sound or 'detonation', and also no discernible difference in 'performance'.