I've had my Falco for a few months now and have a few questions for the forum. I bought the bike used and don't know much about it other than it has been de-restricted. Now, the bike has stock exhaust and as far as I know does not have a chip or anything else. My issue is that at low RPM (less than 4000) the engine bogs down when I try to accelerate and makes noises like my engine is misfiring. It sounds kind of like a car engine does when you have bad gas or water in the tank and try to accelerate from low RPM. At RPM's above 4000, the engine pulls strong , did I say strong? I mean STRONG!!!!! Does anyone else have that same issue?
It almost seems like the airbox has been modified and is larger than stock.