[micoulisninja]

Originally Posted by alex.s

its from an 05 06 zx636. it is from a CDI ecu which is a requirement for that type of coil (the 250 is also CDI, not TCI or others which will NOT work with a cdi ignition system)

the gains from this type of coil comes from the lowered resistance going from the collapsing field into the output coil and into the plug... if you look up joules law you'll see as you lower that resistance, you get higher inductance joules going through the plug for the same amount of charge current (from cdi) which means the spark is hotter and will last slightly longer. just make sure the coils are suited for the type of plugs you use otherwise you could melt a plug. (the 05 kawi 636 uses the same plugs as the 250)

Alex do you believe it would make a difference on the FI models too ??