Moped Army

So i performed my first plug chop today…

i rode for a little under a mile with a new plug (after the engine was already warmed up), then took it out and put the old one back in.

It’s pretty much all white with a little brown at one side.

when i was running it full throttle, i noticed that it sounded kind of weird.

So when i rode home, i decided to take the airbox off, and it sounds better when the box is off.

But it seems like my plug says im running lean…so how could it run better with the airbox OFF!?

HELP???

oh, and by the way.

i have a proma gp exhaust on a stock engine…

puch newport e50