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G20 3 Series owners: 330i, 320d and M340i.
M340i / 3 Series G20 is where Octane started. It exists so G20 owners can go deep: B58 Stage 1 and 2 maps, downpipe and intercooler choices, ZF8 behaviour, M Sport brake wear, LCI vs pre-LCI, and the exact sequence of a used-G20 inspection.
For verified owners of any BMW G20 or G21 3 Series, with tuning threads led by M340i owners.
What happens here: model-specific tech threads (known issues, service intervals, part numbers, recalls), owner-run meets and chapter drives, tuning and suspension sessions with tuners who actually work on this platform, group buys on model-specific parts, a used-car inspection checklist maintained by members, and dedicated slots at Octane track days.
No members yet. Applications are open.
Free on every membership. You apply with the car in your garage and a reviewer decides, usually within 48 hours.
Checked by hand. Documents are only seen by the reviewers, through links that expire in 15 minutes.
No approved members yet. The first application could be yours.