cdi diy circuit ???

Welcome to the forum, thnlir. We're glad to see a new member from Korea.

Here is an old thread that might help you > http://motorbicycling.com/showthread.php?t=28439

Although there has been a lot of experimentation and marketing, there is still no proof that any CDI will work or perform better than the one that comes with the engine.
Good luck. Let us know if you build anything better.

Tom