III

It is not necessary that performance filter is better, maybe that filter is too dens and your pocket doesn't get enough air. What to do? You can make your own custom air filter, from some cushy material like steam filter from an dip fryer. (I did that and it is working perfect) That is not only thing you can do to make your pocket stronger. Butt it is the easier. Of course after that you must set up your carburetor all over again. Air filter must have hole big enough to ensure enough air for explosion. How will you know that your filter is good. Top speed! Your pocket must work perfectly, with constant acceleration until it reaches full speed. And at full speed he must work without any deceleration. Try couple of runs without filter, and then try to fulfill same with your filter. If you made it, filter is good.

II

After that i removed classic air filter and put performance filter, more air more power and torque.

Classic air filter

Performance air filter

That is not all you must do if you want to tune your pocket , however you must setup carburetor. There is one screw on left side (if filter is towards you), that screw determine how many air is getting in side clynder. Turn that screw until yore pocket bike starts to go on his own, reduce it just a little bit until it rear wheel stops.

Set up screw

about my pocket bike

Now, i will get started with my own exp. about pocket bikes. I bought one pocket bike 5 months ago, drive him couple of weeks until something broke. It was upper engine porter. I didn't bother fixing it because engine have extra under hole. So i putt screw in it. Couple of days later, exhaust porter broke, so i had huge hole in it and it didn't sound nice. I cut away old muffler and putt one from scooter, ZX tittan. That is pressure muffler, he creates under pressure in side his chambers and drags out gases from the rest of exhaust. With that engine is working easier and a little bit stronger.