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Opinion about carburator jetting after akrapovic exhaust and DNA air filter

Joined Aug 2016
4 Posts | 0+
Bulgaria
Hello berg lovers.
I need your experience about carburator jets. After I have installed akrapovic exhaust and DNA air filter on my fs650e I began to feel the bike a bit strange and low throttle response. I have pushed the acceleration pump a bit and looks better.
Couple of days ago a guy with a street bike overtake me and I followed him. Accelerate up to 185 and couldn't more. I know this isn't a bike for high speed and that is even stupid. When I come back home remove the spare plug and the picture I don't like. What's yours opinions? I think the carb is standard main jet 160,idling jet 38,main air jet 200,idle air jet 100,starting jet 85 ,jet needle OBEKR position 4 from top.What do you mean guys?
 

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Hello Onyx

a 160 is too small and that is why it goes grey.

168MJ with all else you have there. also, the 38 is too small with the 'R' in EKR. try a 40PJ.

most importantly, go to an iridium plug. I prefer the IXU24 plug or even the IXU27. then NGK make the DCP9EIX.

cheers

Taffy
 
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Thank you very much for the reply Taffy.
I'll follow you advise for iridium plug.
40 idling jet sounds well for me too.But don't you think 168mj still is small? Fc550 use a 182mj. From DNA claims the race filter supply much more air to the engine. I use a db killer on the akrapovic if that is important.
Imo the plug is even white.
 

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that plug is grey! grey is the 'death rattle' of plugs. I suppose if you went to a 9 first and then decided it might be better?

168MJ is about right. we ran a 162MJ with a 155MAJ and an open race exhaust. so 168 how you are.

cheers

Taffy
 
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