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I have an Aprilia SR50 that is actually a direct injected 2 stroke. It has a fuel injector that injects straight fuel into the head and there is an air injector in front of the fuel injector. There is an air pump that run off a cam on the crankshaft for the air injector. Oil is injected to the intake manifold right before the reed valves. Its a great system but I would love to find a way to get into the factory ecu and make changes to get more performance out of it.
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