The pinging hasn't returned, and my latest Blackstone wqs clean. By email a Blackstone engineer agreed the high lead reading in my previous report was probably due to the octane booster I'd used once to quiet the pinging: "This looks to be a healthy 4.0L at the time of sampling." I still have the Dinan stage 1 tune. The whole episode -- about a month of pinging -- remains a mystery to me.
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Analog 2011 e92 M3 | Jerez Black | Black Novillo | 6MT | CF roof | No iDrive, Nav, M button, ZCP, EDC, or center hump | ZHP shift knob | OMP 1010 pedals | K&N filter | Dinan engine tune | OEM exhaust mod (bypass) | EAS exhaust tips | shaved front bumper | 19" Apex EC-7 | 12 mm rear spacers
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