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BMW M2 (G87) Ignition FAQ's

Please read our FAQs page to find out more.

What plugs work best on a higher‑boost S58?

A one‑step‑colder iridium plug gapped to tuner spec helps resist blowout. Recheck gap after initial heat cycles on new builds.

Are coil upgrades worthwhile on the G87?

Fresh or higher‑output coils improve spark energy and stability at elevated cylinder pressures—pair with proper dwell strategy in the tune.

Misfire only under boost—where should I start?

Verify plug gap and age, inspect coils and boots, smoke‑test for small leaks, and confirm fuel quality and timing targets in calibration.