my mates said that his CDI built by HRC, he said he got it from a thailand racing team but he didnt tell me the detail.
after reading your explanation, i got confused about my mates story. So far from what i get is the difference between my stock cdi and his HRC(not really sure) CDI is only the size. him is bigger. i haven't try it on a run.
it would be nice if you could tell another information about this.
these are the CDI
1. stock 150SP CDI


2. my mates CDI


thanks very much
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i ride 150SP