Ignition coils work hard. Heat, vibration, mileage and increased engine load all take their toll over time. As coils weaken, the symptoms can appear gradually — rough idle, hesitation, misfires, harder cold starts or reduced performance under load.
If your car is tuned, remapped, turbocharged or simply running on ageing original coils, upgrading to Mantis is a sensible way to restore ignition strength and improve reliability.
It could be time to change.
- Rough or uneven idle, especially when cold
- Hesitation or stumble under hard acceleration
- Misfires under boost or at high load
- P0300–P0308 fault codes stored or active
- Fuel economy drifting lower over time
- Check engine light - especially if flashing
- Engine takes longer to fire from cold
New Ignition Coils are also a smart preventative upgrade when fitting new spark plugs, remapping the engine or preparing a car for track use.
But before you change....
Misfires can also be caused by worn spark plugs, injector issues, wiring faults, compression problems or sensor faults. If your vehicle has active fault codes or repeated misfires, proper diagnosis is always recommended.
But if your original coils are ageing, weak or struggling under load, replacing them with Mantis high-output coils is a sensible upgrade.
The signs to look for.
- Over 60k miles / 100k kms on original coils
- Any engine remap or ECU tune installed
- Forced induction upgraded (or added)
- At the same time as new spark plugs
- Recurring misfire after replacing other parts
- Oil contamination found in plug wells
- Preparing for a track day, race or sprint event
So if it is time to change....
- 12% more spark energy than standard OE
- Neodymium magnet - faster saturation
- Higher secondary current - bigger flame kernel
- Consistent output from idle to redline
- Reliable firing under boost - no timing pull
- Cleaner combustion, lower emissions
- Direct OE plug-and-play, 2-year warranty
Find your Mantis coil.
Enter your UK reg plate below — or use Year / Make / Model, or the OE number stamped on your existing coil.
Enter the OE part number stamped on your existing coil. Spaces, dashes and dots are ignored.