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Discussion Starter #1
01 SVS
Holeshot exhaust
stock jetting and airbox, 2 shims
When I sync my carbs using a carb sync tool my bike idles like crap. When I sync them by ear (letting bike idle and adjusting till the exaust is a nice even rhythm) the carbs are our of sync by about 1 inch of vacuum. I don't really seem to feel any difference off idle in the two settings. Any ideas?
 

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Did you make sure the carbs were seated correctly and that there were no air leaks. A leaky intake would affect the vacuum.

Good luck,
-JamesW-
 

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I would check the connections between your sync tool and the carb vacuum ports. If one is leaking anywhere, it will throw that measurement off in my opinion.
 
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