Ignition system upgrade for the Mitsubishi EVO 8 / 9 – 4G63 engine.
After removing the 4 bolts holding it down, lift the coil cover out of the way.
Now remove the 3 10mm bolts holding each of the factory coils in place.
Remove the primary wire boot the sends power to the adjacent cylinders spark plug.
Now remove the plug that supplies 12 volts to the coil and sends the triggering signal from the ECU to the coil.
Now the coils can be removed.
Next, remove the boots from the stock coils, you do this by twisting and pulling at the same time, the boot will pop right off.
Push the boot onto the Ignition Projects coils giving it a slight twist until they snap into place.


  1. Nice write up and looking forward to more Evo articles

    Just to add, I have done a coil on plug upgrade on a somewhat stock Evo 8 using Toyota coils and the difference in engine “smoothness” was surprising.

  2. Is the dwell time the same as factory? They look like they would bolt to my suzuki HT81S engine, but I dont have a standalone, so what should I check before switching my ignition setup with something else? I have heard of damaged ecus from switching to different spec coils, but nothing concrete.

    1. Since we are only switching things on the coil side the dwell time is the same. You can damage your ECU if your coil impedance is way different but in this case, the IP coils are application specific and they will not hurt your ECU.

    1. That looks like a pretty good system using the Honda pencil coils but it doesn’t have the multi-spark capability of the IP coils.

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