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-   -   18 ec300 jetting (http://www.gasgasrider.org/forum/showthread.php?t=23577)

taylor146 05-17-2018 03:03 PM

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

fred99999au 05-18-2018 01:25 AM

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.

Jakobi 05-18-2018 03:44 AM

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?

Doc Brown 05-18-2018 04:21 AM

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.

Gottsell 05-18-2018 03:40 PM

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

Motocrotts 05-18-2018 08:27 PM

With the new mapping I'm running the standard needle in the 2nd pos, 170MJ and 40PJ. 2500' and 60 - 80 degs F.

taylor146 05-19-2018 03:13 AM

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.

chunkysoup 05-20-2018 10:48 PM

I went back to the stock needle after the remap and it ran way better.

fred99999au 05-21-2018 02:04 AM

What is the stock needle?

chunkysoup 05-21-2018 09:46 AM

Quote:

Originally Posted by fred99999au (Post 183328)
What is the stock needle?

The one that came in the bike from the factory the N1EF needle


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