Okada Projects

The best Okada Projects ignition upgrades at JDMuscle are the two listings in this collection: Plasma Direct Coil Packs for the 2013-2016 Scion FR-S, 2013+ Subaru BRZ, and 2017+ Toyota 86, and the Plasma Spark for Subaru EJ25 turbo models, including the 2004-2014 STI and 2006-2014 WRX. Choose by engine and platform first, because the two products serve completely different Subaru engines. Check your year and model before ordering.

Ignition parts deliver the spark that starts combustion in each cylinder. Coil packs sit at the top of that system, turning low-voltage power into the high-voltage spark the plugs fire, and a weak or failing coil can show up as a misfire, rough running, or lost power under load. When you shop ignition parts, confirm the engine and connector style for your car, replace parts in matched sets where the product is sold that way, and pair any coil work with a plug inspection. Related parts are in Performance Spark Plugs, Fuel Systems, and Engine Management Systems.

Okada Projects is represented here through its Plasma line, split across the two Subaru boxer applications in this collection. The Plasma Direct Coil Packs cover the FA-engine FR-S, BRZ, and 86, while the Plasma Spark covers the turbocharged EJ25 in the STI and WRX listed above. That split is the useful shopping lesson: ignition upgrades are engine-specific, so the product name matters less than matching the exact motor in your car.

NGK is the spark plug brand most Subaru owners pair with coil work, known for plugs fitted across a wide range of Japanese performance engines. If your plugs are old, changing them while the coils are off is sensible preventative work. NGK's range is the natural next stop after choosing a coil set here.

Denso is another major ignition and engine-component name owners cross-shop for Subaru applications, covering plugs and related parts for daily-driven and modified cars. Comparing Denso alongside NGK helps you match heat range and plug type to how your car is actually used. For EJ25 background, read Subaru EJ257 Engine: Everything You Need To Know, and browse the 2013+ BRZ/FRS/GT-86 range for the coil pack platform.

Which Okada Projects product fits my car?

The Plasma Direct Coil Packs are listed for the FR-S 2013-2016, BRZ 2013+, and 86 2017+. The Plasma Spark is listed for Subaru EJ25 turbo models, including the 2004-2014 STI and 2006-2014 WRX. Check your year, model, and engine before ordering.

What are the signs an ignition coil is failing?

Common signs include a misfire, rough idle, hesitation or power loss under load, and a check-engine light. Those symptoms can also come from plugs or other parts, so diagnose the car rather than assuming the coil is the cause.

Should I change spark plugs when I change coils?

It is a sensible time to inspect them, since the coils come off to reach the plugs on many applications. Worn plugs make new coils work harder, so many owners service both together.

Is a tune required after fitting coil packs?

Replacement-style ignition parts are normally fitted to restore correct spark rather than to change engine output, so they are not usually a tune-by-themselves modification. If your car is already tuned or modified, ask your tuner whether anything should be checked.