YDIS

Yamaha Dual In­duc­tion Sys­tem

Practical Sportsbikes (UK) - - What It All Means -

An­other ’80s Yamaha de­sign used on many of the firms four-stroke sin­gles and twins. The sys­tem uses two carbs per cylin­der – one flat­slide, one CV. The flat­slide pro­vides mix­ture to the in­let at low rpm, aid­ing fuel ef­fi­ciency and giv­ing in­stant throt­tle re­sponse. As the revs rise the CV carb comes into play, dou­bling in­let flow at max rpm.

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