it converts the internal ignition coil and modulator to an external one, preventing the heat from the engine damaging it, its particularly common in probes, as they're based on the same engine, improved throttle response has also been reported with some people
can you feel a difference in performance ? Ive got a lighter fly and like the difference in this, have thought about the mod in past ? ( not to readers do not ask questions anout flywheels and steer conversation of topic for How to guide reasons- thank you :D )
I hereby summon thee Pringle Addict to my faded and dirty Mx-3… dirtier than a cheap kings Cross W**re at the moment, so feel free to come and give a live 2 day demonstration, whereby you will receive food, beer and a bed for the night (not sharing :!: )
A couple of suggestions
loosen the waterpump pully bolts while the belts are still on as its much easier
Instead of an engine hoist you can just put a jack under the sump. Use a lsrge flat bit of soft wood on top of the jack to protect the sump. I like using a trolly jack as its quick to raise/lower the engine as you need.
I would also be thinking about doing a new water pump while I was at it!!