Fully derestrict a nc30

[razghost]

In order to fully derestrict a nc30 do you need a new cdi box?

[Psychosomatic88]

taken from some article by the mastefr that is Rick Oliver

"This time I’m going to talk about tuning your grey import NC30 for more power and speed, so first
we need to understand the baseline from which we are working.
Japanese legislation during the NC’s production period required that 4OOcc bikes should produce a
maximum of 59bhp and be speed restricted to 180Kph (112Mph). As you will all know by now, the
speed limiter is electronically imposed and can be overridden by fitting an M-Max or similar
derestriction unit in series with the ignition “black box”, under the seat hump. This does not make the
engine produce any more power, it simply allows the bike to reach its true potential top speed of
125Mph or so. The NC30 engine unit was designed with the brake horsepower limit in mind, and so
in standard road legal trim 59 Bhp is the most that a healthy one will produce. This can be improved
upon to some extent by modifications to inlet, exhaust and ignition systems to allow the engine to
breathe and rev more freely, but you will always be bumping into the inherent limitations of a
“designed for 59BHP + engine, and so extracting serious power increases will require the attentions
of a professional tuner to carry out such internal work as porting, increasing compression ratio,
changing cam profiles and fitting big bore kits."

Is that the bit you meant?

[razghost]

Thanks for that psycho, it pretty much hit the nail on the head.

[Psychosomatic88]

No problemo :D