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Message: <blockquote data-quote="Rednaxs60" data-source="post: 228655" data-attributes="member: 4617">More research done and this time regarding coils, spark units (coil drivers) and coil dwell time.  It's interesting information,  will probably be like school and past work where the information was required, but now, only if needed.  Looked into the theory and practical issues.This information does answer some distant questions I have thought about regarding the many forum threads regarding upgrading/changing coils, installation of CD ignition systems and such.  Many factors influence the correct selection of coil for the application such as turns ratio, coil inductance, and input voltage.  These factors affect the coil operation in the ignition system, and potentially engine performance.  There is information on CD ignition systems and how coils should be "matched" to the specific CD unit.  Coil tuning, yes, I have found information regarding this topic.  Never heard of it so had to go look for information regarding it.  It's similar to choosing spark plugs, and experimenting to get the best coil for your application.The attached document is the Reader's Digest information I have, not everything I've read and found, but enough to give me a better understanding of the ignition coil and coil drivers.  YMMV!Enjoy, have a good read, questions will be asked later.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite17" alt=":LOL:" title="Laugh    :LOL:" loading="lazy" data-shortname=":LOL:" /><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite6" alt=":cool:" title="Cool    :cool:" loading="lazy" data-shortname=":cool:" /></blockquote>

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