Cannonball Special Operations High-Energy Ignition Coils for McLaren

Misfires, an Achille's Heel in the McLaren platform. Many owners know the dreaded frequency of needing to refresh the ignition system in their M840T or M838T, even on a bone-stock car. 

The upgraded High-Energy Ignition Coils from Cannonball Garage address this exact issue. No longer will you need to replace plugs and potentially coils every 10k miles. These coil packs ensure a great spark and will outlast factory components meaning less frequent servicing. 

These coils are compatible with OEM calibrations but can be combined and are recommended with an M-Engineering Calibration to increase dwell time and further increase energy output and spark intensity.

M-Engineering recommends replacing the spark plugs when you do this coil pack upgrade. Plugs should be gapped down to .022"

NOTE: These coil packs come outfitted with spacers on the bolt for a good level and seat on the head. Depending on your McLaren model, you may need to add an additional spacer/washers or cut the bolt to shorten.