Select Vehicle
Select Vehicle

BMW M4 (G82) Ignition FAQ's

Please read our FAQs page to find out more.

What spark plugs are recommended as boost increases on the S58?

A one‑step‑colder iridium plug gapped to tuner spec resists blowout. Recheck gap after initial heat cycles on new or rebuilt setups.

Are coil upgrades worthwhile on the G82 M4?

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

Why would my M4 misfire only at high load?

Typical causes are excessive plug gap, aging plugs, marginal coils, or small leaks. Confirm fuel quality and calibration targets before pushing harder.