It's a similar world with fuel injected dirt bikes. Although the throttle is mechanical, some specific fuel and ignition mapping choices the manufacturers provi

It's a similar world with fuel injected dirt bikes. Although the throttle is mechanical, some specific fuel and ignition mapping choices the manufacturers provide results in huge amounts of acceleration with small amounts of throttle input. The exact reasons why aren't published, but the general consensus is it relates to emissions. Remapping the factory ECU completely resolves the issue, albeit obviously a "defeat device" per the EPA