The TA398 COP and signal probe from Pico Technology is the easiest and fastest non-intrusive way to check coil-on-plug ignition coils and spark plugs.
You should generally only purchase bare modules as a replacement when you already own a kit.
For included training & support, or to get started with PicoScopes, check out our kits.
Bare scope modules do not come with an Autonerdz Training & Support subscription.