Ask the Editors: Why No Fuel Injected 2-Strokes?
The simplest answer? The factory two-stroke ATV went out of production before fuel injection fell into favor. The last two-stroke ATV to leave the factory was the 2006 Yamaha Banshee but aside from graphical updates and a few small chassis improvements, it was essentially the same package available sine 1987. Obviously back in those days there was absolutely no thought to fuel injecting all-terrain-vehicles and had Yamaha decided to add the feature even in the end of its life-cycle, it would have added cost, weight and complexity to a machine that had already been given its walking papers.
As far as the second part of your question; fuel injecting a two-stroke is absolutely possible. In fact, fuel injected two-strokes exist in the scooter, watercraft, and snowmobile industries even as we speak. While it’s true that injection eliminates cause of jetting concerns, it does have some downsides to consider as well. Namely weight and a hike in price to offset the R&D cost, but perhaps the biggest downside is that fuel injected vehicles require laptops, fuel maps and special linking hardware to tune rather than a screwdriver and a bag of brass jets. Keep in mind a majority of the appeal of the two-stroke has been its relative simplicity.
And a final note- there are companies out there who understand that some individuals simply prefer the benefits of fuel injection over carburetion and offer conversion kits to eliminate the carb once and for all.
