Quote:
Originally Posted by ProDarwin
I wonder if anyone will see any significant power gains with the kit. If so, I'd consider getting a newer Ninja and putting the older (more powerful) engine in it. I always thought that bike was like 10hp shy of being fantastic.
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I don't think you'd see any gains that large. The Euro-spec EX250 is FI, not sure if it makes any more power than the carb version but it would be interesting to see.
As far as the newer engines being down on power, it would be a lot easier to do a cam swap + pipe to get whatever is available. Pretty sure it's the cam that changed the output, as I believe they were trying to bump the midrange up from the previous version. Carb size stayed the same pretty sure.
One advantage I can see from these FI conversions (for the person interested in mileage) would be dropping down in venturi size. You'd be giving-up some power of course, but I would think you could pick up some MPGs if you were tuned for your cruising RPMs and not top-end power. The Ninja engine makes peak torque and HP way up there, and everything (cams, carbs, etc) supports that end of the spectrum. Anything you could do to drop the torque peak down closer to cruising RPM would help. Seeing as how biased the engine is toward power at high RPMs I'm really amazed they get the mileage they do when cruising, especially if they are geared up.
Jay