Sparks CDI High Rev Box...

[Maryland 400EX]

Is anyone using this? It claims to raise the rev limit over 1000 RPMS for greater top speed. It would make sense that a 400 EX with big cams could make use of this with the higher rev range. Is there a performance gain with this piece? Inquiring minds want to know.

[Maryland 400EX]

What? Nobody with the CDI? All these 416 and 440 EX's running around on the stock Rev Limiters? I find that hard to believe... I thought you guys were making power...

[Doibugu2]

This is what I have read from others.

The CDI box makes the bike very difficult to start after awhile. I guess if you battery is even slightly down, it won't start.

Also, the bike does not continue to make power after the factory box. So your paying for something that you get no benifit from. This is for a Honda quad though.

[Maryland 400EX]

Wow... Not good.