A boost bottle catches the mixture of oil, petrol and air, that has been forced back in to the carburetor, preventing it from getting to much fuel and not enough air.
Becouse a two-stroke engine will push back a little of the mixture in to the carburetor, and then it will get more fuel added, so you will end up with to much fuel, and not enough air, so the combustion won't be perfect, the boostbottle will catch the returning mixture before it get's more fuel in it, and then it will release it back in to the cylinder, ensuring a better combustion.
This will increase performance, and safe fuel.
Morrisons sell this it is only usally one or two pounds it is in a silver bottle
This site has detailed info... http://www.49ccscoot.com/boost.html
Look on the back of the bottle and it will tell you.
They don't have a governer. The engine that comes on them is as fast as the thing will go unless you add a boost bottle.
2l of water plus some ground up orange rinds to boost the takeoff
http://www.gilera-runner.com/anleitungen/img/boost.gifjust that easyhttp://www.gilera-runner.com/anleitungen/img/boost.gifjust that easy
A boost bottle is used to help an engine run a little better when its RPM's are under the useful range of the pipe. Carburetors will double dip - that is double jet the mixture coming from the carburetor due to the intake signals received by it (a suck and blow situation). It will push the mixture back past the jets and (try to) jet it again. This makes a condition which is too rich - hence the double jetting and the dip in torque. This usually occurs at an RPM level just before the power is coming on the pipe. This happens to the Blaster engine at about 5000 RPM. The boost bottle will capture and release its charge when the frequency of wave amplitude within the inlet pipe is within its working range. To tune out the dreaded (and well known) 5000 RPM torque dip the Blaster can be fit with a bottle volume of 250 CC - this includes the bottle itself and the connecting hose. When the bottle volume, tube length and tube diameter are properly designed it will work as intended.
Low octane fuel. Run a tank of premium through it or add a bottle of octane boost and it will be fine for a while.
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Run a tank of high octane through it or add a bottle of octane boost, I did this 4 months ago and have been able to run 87 octane in it and the ping has not returned yet.
There is no low boost light in a gtp. There is a boost meter. indicating how much boost you are pushing.