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Honda Civic Type R (FK8) Ignition FAQ's

Please read our FAQs page to find out more.

What plug heat range works for a tuned FK8?

One step colder than stock is common for elevated boost. Gap to your tuner’s spec—FK8s often prefer a slightly tighter gap to resist blowout.

Are coil upgrades worthwhile on the FK8?

Quality coils can improve spark energy and consistency on higher cylinder pressures. Pair with proper plugs and dwell settings on the FK8 ECU.

Why does my FK8 misfire only under heavy load?

It’s typically plug gap, aging plugs, or marginal coils. Verify FK8 fuel quality, inspect for boost leaks, and confirm tune health before pushing harder.