yeah, its a bolt on directly to the exhaust valve, so that would create issues with crap getting in the engine, but we might rig something...
edit- and yeah that is the throttle and the scree is the idle adjust. any idea what the rpm could be?
you can just take metal pipe with threads on the end and screw that into the exhaust valve, thats what i did on my ghetto racing gocart, on my real one we have a bolt on straight pipe which creates a vacum to suck the exhaust out of the engine, anyway...
the idle should be around 2k maybe a bit less, peak would be around 4k or something in that area