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2016–2021 BMW M2 Fuel System FAQ's

Please read our FAQs page to find out more.

How far can the stock fueling go on the N55 M2?

On pump gas, OTS tunes and bolt‑ons are fine. Higher power or ethanol blends may need upgraded LPFP/HPFP and injectors—size for future goals and tune accordingly.

What about fueling on the S55 M2 Competition?

The S55 supports moderate ethanol blends on stock pumps, but higher targets benefit from upgraded HPFP/LPFP or port injection with proper ECU calibration.

How do I avoid fuel starvation on track?

Keep tank levels higher during sessions, consider baffling or a surge solution for sustained lateral G, and log fuel pressure to verify stability.