Do the Bing Constant Velocity Carburetors used on HKS, Jabiru, and Rotax 912 have to be modified?
There is no internal modification required to run HACman on the Bing CV carburetors. Externally, the vent line will be changed. Your carburetor(s) must already be jetted rich enough for the lowest Density Altitude they will ever encounter, prior to installing the HACman. HACman is a leaning device, and does not technically increase fueling in Full Rich position. …Only to the extent that the carburetor jetting will allow.
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