Quote:
Originally Posted by DOCTOR.Y
hello guys, my 10 E92 does the same noise! I tried BP, SHELL, CALTEX all 98 fuel, same. I tried to add one bottle of octane booster, noise is gone.
So I think it is knocking noise related to fuel. Should I remap ECU or just keep adding octane booster.
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Same thing happens to a few cars. Recently a 2013 owned by a friend had the same problem as BMW had it for month and couldn't sort it out. We did a BPM stage 2 tune X pipe which fixed it and gave great performance gains, but but after a few months the pinging came back despite changing 02 sensors. He ended up selling it never fully solving the problem. Tried coil packs plugs and sensors.
A BPM stage 2 tune will give a lot of gains and may well solve the issue but there are no long term guarantees for pinging.