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2022–2025 Subaru BRZ Ignition FAQ's

Please read our FAQs page to find out more.

Do coil upgrades help the ZD8 BRZ FA24 2.4L?

Healthy OE‑style coils are reliable for NA use. For higher boost, upgraded coils and a robust harness can reduce misfire. Pair with the correct heat‑range plugs and appropriate gaps.

What plug heat range and gap work well on a mildly tuned ZD8 BRZ?

One step colder than stock with a slightly tighter gap is common as cylinder pressure rises. Monitor knock and misfire in logs and adjust accordingly.

Any wiring reliability tips for the ZD8 BRZ ignition system?

Ground the heads properly, route looms away from headers, and inspect aging connectors. Clean grounds stabilize idle and cruise.