O.K I HAVE NO IDEA WHAT IS GOING ON.FIRST OFF MY CAR IDLE'S LIKE ****.LAST WEEK I HAD IT PERFECT.BUT NOW ALL IT WANT'S TO DO IS STUMBLE.BUT THAT'S NOT MY PROBLEM.IF I MASH THE GAS SHE IS COOL TILL 6500 7000 THEN SHE WILL HAVE TROUBLE HITTING MY REDLINE OF 8000,HESITATES REALLY BAD.BUT IF I DON'T MASH IT AND TAKE IT UP SLOWLY SHE WILL ROLL ALL THE WAY OUT TO 9000.THIS REALLY SUCKS CAUSE I CAN'T RACE ANYBODY,SHE WILL FALL ON HER FACE.THANKS TOM

 

TPS, vacuum leaks, any number of things. Check your TPS first, turn off the caps lock. Don't bother going over 8K, not only is it bad for the engine, but with the stock ports, your not gonna have any power up there.

 

Could be several things. Here is my list:
1. Check if the 5th-6th ports are stuck
2. Check if the cats are plugged.
3. Injector cleaner.