I've heard/read of this modification too. It is clearly against CA law to do it and would change a Class 1, 2 or 3 Electric Bicycle to a Motorized one; requiring all that goes with that new classification. I've also heard that it makes all the readings on the display that depend on the wheel sensor to display incorrectly. Don't know what those incorrect readings will do to the rest of the computerized system?
If someone wants a electric Moped, they really should just buy one from the start.
