An ignition coil takes voltage from the battery and multiplies it to create a spark at the spark plugs, which in turn ignites the engine. Cars have been using some form of the coil ignition system for ...

Testing Okada Projects Ignition Coils On A VW/Audi 2.0t FSI Motor To See If A Better Burn Means Improved Engine Response. The 2.0T FSI is a popular motor for good reason, especially because numerous ...