CDI READING,MAP PLOTTING AND PROGRAMMING

Discussions and updates on your new bike, your new build, your wishes, wants and desires
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Skub
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Re: CDI READING,MAP PLOTTING AND PROGRAMMING

Post by Skub »

Clever stuff man. 8-)
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Re: CDI READING,MAP PLOTTING AND PROGRAMMING

Post by Dave G »

Skub wrote: Wed Dec 31, 2025 2:43 pm Clever stuff man. 8-)
Thanks
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Re: CDI READING,MAP PLOTTING AND PROGRAMMING

Post by Taipan »

Dave G wrote: Tue Dec 30, 2025 7:44 pm Maybe this isn't the right place for this kind of stuff!
Might have got a wider audience in the mechanics section, or just tagged onto your bikes thread? But interesting stuff anyway. :thumbup:
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Re: CDI READING,MAP PLOTTING AND PROGRAMMING

Post by Dave G »

Taipan wrote: Wed Dec 31, 2025 3:28 pm
Dave G wrote: Tue Dec 30, 2025 7:44 pm Maybe this isn't the right place for this kind of stuff!
Might have got a wider audience in the mechanics section, or just tagged onto your bikes thread? But interesting stuff anyway. :thumbup:
Thanks for feedback, I'll post this kind of stuff in the Mechanics section in future, not sure how to tag onto my bike!. Cheers
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Re: CDI READING,MAP PLOTTING AND PROGRAMMING

Post by porter_jamie »

How did you determine your advance curve? Do you use tps? You map to mbt or just copy the old ecu?
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Re: CDI READING,MAP PLOTTING AND PROGRAMMING

Post by porter_jamie »

Ps i like the fantic
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Re: CDI READING,MAP PLOTTING AND PROGRAMMING

Post by Dave G »

porter_jamie wrote: Wed Dec 31, 2025 5:56 pm How did you determine your advance curve? Do you use tps? You map to mbt or just copy the old ecu?
Ultimately running the bike on a dyno will determine the best setting!. At the moment I have the standard map from the Otom NC450 CDI and can switch to the base Nibbi racing map which I intend to experiment with. I am using an Nibbi FCR39 carburettor that has a TPS but the Ignitech dccdip doesn't have an input to use it. I might purchase this Ignitech race CDI which does.

https://www.ignitech.cz/en/vyrobky/dccd ... 1_race.htm
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Re: CDI READING,MAP PLOTTING AND PROGRAMMING

Post by Dave G »

porter_jamie wrote: Wed Dec 31, 2025 5:59 pm Ps i like the fantic
What is map to mbt?
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Re: CDI READING,MAP PLOTTING AND PROGRAMMING

Post by porter_jamie »

Min timing for best torque
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Re: CDI READING,MAP PLOTTING AND PROGRAMMING

Post by Dave G »

porter_jamie wrote: Wed Dec 31, 2025 7:21 pm Min timing for best torque
Thanks for reminding me, I expect to keep advancing the ignition timing until torque stops increasing then back it off slightly
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Re: CDI READING,MAP PLOTTING AND PROGRAMMING

Post by porter_jamie »

any news?
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Re: CDI READING,MAP PLOTTING AND PROGRAMMING

Post by porter_jamie »

Dave G wrote: Wed Dec 31, 2025 7:43 pm
porter_jamie wrote: Wed Dec 31, 2025 7:21 pm Min timing for best torque
Thanks for reminding me, I expect to keep advancing the ignition timing until torque stops increasing then back it off slightly
assuming you are not det limited
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Re: CDI READING,MAP PLOTTING AND PROGRAMMING

Post by Dave G »

Need better weather before I start modifying map B but that's when the fun will start.
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Re: CDI READING,MAP PLOTTING AND PROGRAMMING

Post by Dave G »

The engine in the Cabby is a Zongshen NC450S which is also fitted to to the Kove 450 Rally. A stepped woodruff key is available for the Kove which advances the timing by 4 degrees and apparently gives good power gain but poor starting.

https://www.kovepower.com/store/p312/Jo ... key.html#/

As a starting point I'll probably advance the timing by 4 degrees from about 2000rpm up to the 12000rpm limiter. Hopefully not modifying the lower rpm will mean no starting issues but I will need to keep an eye on the overall engine temp,

Red is current B Map, Blue is proposed B Map.
Attachments
proposed_B map.jpg
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Re: CDI READING,MAP PLOTTING AND PROGRAMMING

Post by Dave G »

Anybody fancy a go?. Maybe I can help, just send a PM.
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Re: CDI READING,MAP PLOTTING AND PROGRAMMING

Post by Dave G »

Share permissions changed, hope that the PDF is now accessible!

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Re: CDI READING,MAP PLOTTING AND PROGRAMMING

Post by Dave G »

Just added an extension to the CDI port so that I don't have to remove the seat each time that I need to access it. This is what I did.
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