Audi S4 B8 Ignition Coils

Ignition coils sit right at the heart of your fuel and ignition system, turning battery voltage into the high-energy spark your engine needs to fire cleanly. When the coils start to weaken you will feel it in misfires, rough idle, hesitation on boost and sometimes poor fuel economy. Upgrading the ignition coils on your Audi S4 B8 is a smart reliability mod as well as a performance-friendly upgrade that helps your engine make the most of its existing tuning and hardware.

Quality performance coils give a stronger, more consistent spark, which supports better combustion, smoother running and more confidence at higher loads and RPM, especially on mapped or heavily modified cars. If you are running added boost, uprated injectors or more aggressive ignition timing, tired factory coils can quickly become the weak link. Fresh, uprated coils help reduce misfires under load and can improve throttle response and driveability without any wild or unrealistic power claims.

Whether your Audi S4 B8 is a daily driver with a few choice mods or a full track build, it is worth treating ignition coils as a key service and tuning component, not an afterthought. Pairing good quality coils with the right plugs, fuel system health and proper mapping keeps the whole ignition side working as it should. At Progressive Parts we only list proven brands and motorsport-grade options, so you can bolt them on knowing they will cope with hard road use, track days and everything in between.