Making the motor quieter and cooler.

[motorpsycho]

I've taken the baffles and pretend cat converter out of the muffler and put in chore boys. It breaths out much better and is about the same sound level as stock with a lot more power. The stuffing absorbs vibration (sound) but is very free flowing. The same idea as a glass packed header on a car but cheaper. The back pressure is reduced but still enough that I'm not having a problem. Also throw away the stock air filter and using a K&N clone for a pocket bike. I was unclear in the other post about packing the muffler.

glasspacks are a STRAIGHT through muffler, with louvers cut into the center pipe. the outer case is stuffed with fiberglass. the exhaust sound that flows into a glasspack is reverberated by the louvers in the center pipe. the fiberglass matt is where the noise comes from. the exhaust flow actually never goes through the fiberglass, like it is going through your chore boys.
but whatever works for you....i say go for it if it works.