[Jesserocksf]

So today I started my bike up and started to run fine until I pulled out of my driveway and I lagged? I put it neutral and the idle kept jumping and my exhaust kept popping!! It doesn't sound the same until I'm around 4th gear.... Idk what the **** it is... I checked the battery and it reads 12.5. Is it the battery or? Please help me!! Thanks