It sure as hell beats changing jets, running, checking plugs, changing jets again. Besides, EFI can deliver optimal mixture under different conditions such as temp, barometric pressure, air density, etc. My mechanic told me that if I want to go to the 103 cu in stroker, I'll have to install a larger fuel injection unit. I'm quite happy with the 95" kit. Short stroke means I can rev it higher without excess piston speed. More revs = more hp. Of course, when you make more hp, you burn more gas. Mileage went from 40-45 mpg to 35-40 mpg.