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Discussion Starter #1
Hi guys, i hope someone could take a few minutes and help me. My KFX has yoshi duals full exhaust, 12 hole mod (stock filter), 182F 185R keihin jetts. I think it is too rich i will post pictures of the spark plugs. My concern is that from 90 KM/H to 115-6 KM/H the quad is slow.. and it hits 116 km/h top speed. Until 90-100 pulls very strong. My clutch and springs are stock and i am waiting ot EPI Pink spring. What jets will you recomend for riding 2000-6500ft?⁸
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Discussion Starter #2
in MPH it is 56 untill 72. Also i removed the airbox lid and tested without. It was the same oe maybe a hair better (im not sure). Also tested with 2,5 turns and 1,5 -2,0 turns on the air screws. No difference. To be fair i think the quad pulled harder before 12 hole mod and rejjeting...
 

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Discussion Starter #4
i put 172f (2.5turns) and 175r (3.0 turns) it feels the same but why is my back plug so dark?
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