Great little article but not entirely true about snowmobiles not running at a constant RPM. They use a CVT transmission that does basically keep the sled at a fairly constant RPM. It doesn't have the wide variance needed for MX, but CVT transmissionS keep the RPM in the meat of the powerband. That being said, I'm 100% confident they will find a way to supply fuel efficiently for a clutched engine in the near future if they haven't already. A snowmobile is more similar to a jet ski than a MX bike in power delivery. I just hope when it's all said and done that the future EFI 2 stroke MX bikes arent more expensive than the 4t's, unless the 4t handicap is taken away. Otherwise, it may never take off because of the low price and reliability of gool ol' carbureted 1995 2t technology.