Pirelli SL26 3.50-10 Tire Proper PSI

[shadog37]

What do you mean by 'pull the plug' on stock air box. My 50atm a1 is all stock only changed to iridium plug. Thats it. My needle falls off now. 50 mph . Seems like it actually wants to go even faster than that most times but afraid to blow motor. But seems like it would take it though. But ya what do you mean by pull the plug from my stock air box? Thank you for your time bro