Question about 2003 Harley Davidson FXSTB Night Train

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High Idle on a 2007 Night train

Got a new 2007 Night Train and it works fine BUT it has rpm like a japs. Is there a way to adjust the idle to really low ? I know that the high Idle is a sort of adjustment to create more power to the battery. but hey, I'm standing still as little as possible so the battery will be charge anyway. Or changing to a carb, would that work ?

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The engine needs 950-1050 rpm's to properly charge the battery and supply enough oil pressure. Lowering it can effect both and is not advisable to do. There;s a small window to play with but it is better left at factory specs. As far as FI injection to carb, it can be done but at a cost and the same applies to idle speed there, just a bit more of a window because of no fuel pump drawing from the system.

Posted on Nov 20, 2008

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Posted on Jan 02, 2017

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