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Discussion Starter · #1 ·
Hi all,

When I got the 2013 Duke 390 from the previous owner, the idle was set very high for some reason.. 2000-2100 rpm? The throttle had a bit of cable play which is good so I just unscrewed the idle screw on the throttle body a bit to get the rpm down to ~1500 rpm

However with the cold weather I noticed more irregular idles and engine stalled every now an then so I've increased the air intake a bit but is the any proper guide on how to make this adjustment correctly? thanks
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