18 ec300 jetting
Hi all,
Since I've had the latest ignition map the NEDW needle I was using that seemed slightly rich now seems a bit lean up to 1/4 throttle. Would like to know what needle to use , was considering trying the standard needle again. Maybe NEDH? Thanks Darren |
I have a Suzuki NECJ in my 18 GP300. Dunno if that helps due to the different head or not.
Need to find a table of needle specs to work out if it is richer or leaner. |
J diameter is leaner than W. Going to a H may help with your issue, or bumping the pilot up a size might too.
What clip position are you in? Have you tried going richer? |
If its lean up to 1/4 changing the needle wouldnt change that. You can try to close the air screw 1/4 turn wise or take next bigger pilot jet as Jakobi suggested.
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I have the same problem with my std ec300. It work fine before the new mapping. Now i cant get it right. Either it goes very rich or When it goes fine it is detonation
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With the new mapping I'm running the standard needle in the 2nd pos, 170MJ and 40PJ. 2500' and 60 - 80 degs F.
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Hi all thanks for your replies.
Had an interesting conversation with a guy here in the UK who looks after the team bikes for gasgas uk. He said they also tried all sorts of different needle's before the map update , but now runs the standard needle and says it's spot on. He said they have been feeding some input back to the factory and from what he's heard they have advanced the ignition curve down low and retarded it further up . So will give the standard needle a try again and see how it is. |
I went back to the stock needle after the remap and it ran way better.
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What is the stock needle?
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