Wont replace efi but it can substitute regular carburetors that every oem uses (60% to 80%) on lower priced inventory.... only the higher end quads, streetbikes and dirtbikes have efi... most dirt bikes, streetbikes, quads, smaller engines run off of a carb and we all know how much of a pain regular cheap jetted oem carbs are... looking forward to the involvment of the smartcarb with oem's in 2015, marketing and an aggressive sales team is a must but I think it can be possible.