couple problems
 

well i have some problems i want to make sure arent problems.... well the first one is i did a burnout for the first time in a long time the other day and when i popped the clutch i felt and hurd a clunk noise that didnt sound good so i did it again and it did it again, what could this be?? 2. the other day i went on a long 400 mile trip and it felt like the car got a different powerband, it went from kicking in better at 3.5k up to hitting alot harder and now my car has 13k miles after the trip why is this?? 3. sometimes when i take turns its either my seat or under me i feel something move with the car after the turn and its wierd, anyone know?? and last 4. my cel light comes on like twice a week then for all the other days its off but will keep doing it and i dont know why, is this bad? thanks hopefully i can solve all this later

clutch/transmission for sho.....not good. better have them checked out, something's def gotten loose in there because of the jolt you did. nweiz it rly isn't good to do what you did esp on a stock clutch....take it to your mechaninc asap bro

ohh no this suks, i hope its not this but ill have to schedule a check and my dealership charges alot and there far away...

if you don't have an aftermarket header, I would take it to the dealer to get checked. After your wonderful idea of the burnout, you could have messed something up. Either that, or go to Pep Boys/Autozone and have them read the CEL code for you...