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  1. #1 Upgrading the ignition system 
    C-Moto Guru spencer2004's Avatar
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    Jan 2012
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    I noticed the other day that my engine idles slightly faster with the head light off so I am geussing that with the lights off the ignition system can get more power and produce a more powerful spark so I was wondering would a more powerful ignition coil increase performance and/or give me better milage at all? For example could I just switch my current coil with an ignition coil from an old vaxhaul corsa? Would there be any risk of damaging my engine at all?
    Sinnis Max II (QM125-2V), K157FMI engine (technically a K162FMJ now), 115 main jet, 40 pilot jet, cone air filter, 150cc big bore kit, 17 tooth front sprocket, 30mm carburettor, alarm with remote start, HID spotlights, performance CDI.
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  2. #2 Re: Upgrading the ignition system 
    MCM Chinese fellow td_ref's Avatar
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    Jun 2010
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    Shenzhen, Meizhou
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    that with the lights off the ignition system can get more power and produce a more powerful spark
    My view is headlight draw large current at alternator consenquently more load to engine and reduced rpm at idle.
    同志仍需努力
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  3. #3 Re: Upgrading the ignition system 
    C-Moto Regular
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    Kunming, China
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    I learned this on a Royal Enfield: changing out the coil to a more powerful one CAN and WILL affect the entire ignition system. You will have to upgrade other components too!
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