I'm not sure what you mean by "Hard" but if it's reving high adjust your idiling screw.
it basically lets the bike work at higher revs, for example on mine it gives it unlimited revs, so it wont stop at about 6000rpm like a normal bike but just keep going, it can be bad because if the revs get too high the engine may explode
The timing is off.
Rpms, revolutions per minute.
cid
Im assuming you mean a powerband on a 2 stroke motorcycle - when you hit the a certain level of revs an extra valve opens giving you the extra power surge that you feel on the bike.
IT SOUNDS LIKE YOUR ICV. (IDLE CONTROL VALVE) YOUR CAR REVS UP AND DOWN RIGHT? JOSE
Governors limit the RPM on the engine. Removing it will allow higher revs but can cause harm to your engine.
Manuel transmission? You need a new clutch.
Most do not have a governor. If you are talking about a mini bike go to youtube and type in preparing a box stock engine. They do it on video. There are four videos 1-4 that go over race prepping a 6.5hp engine for go kart racing. These are the same engines as used in Baja Heat, Warrior etc. If you have a 3hp minibike they have the same governor set up. You will take your max revs from 3600 to 6000rpm a big increase.
If the tyre does 0 revs per mile you will be skidding and the rubber will wear out in no time. At 99 rev per mile you will still be skidding - unless your tyres are roughly 17 feet across!
check the on/off valve the rubber inside can become brittle and fall apart clogging the fuel line.