Okay I had bbk under drive pulleys on my car and I kept getting check engine light so I re torqued the crank pulley then my car start squiling and would feel boggy at low rpm really bad then it would be almost normal at high rpms. I put my stock pulleys back on and the same problem is happening the car act really boggy down low like it doesn't want to move then when it reaches high rpm it back normal and o yea I did buy a new crank pulley bolt.

 

what was the code that set the check engine light?

 

The car is a 1996 gt. plus the code was for the knock sensor