I am not sure how to search for this, any help is appreciated. But my car has an LS6 in it, and it feels like it cuts out several times while accelerating; 1k, 3k, and at 5k it feels like its not pulling anymore. Idles normal, starts up every time, was tuned last year and has 30k miles on the tune. Im not sure where to start, would that be an injector issue, or a MAF?

Car is a 2002 WS6, engine is out of a 2002 Z06, its a 6 speed car.

 

Is it throwing any codes, i.e. check engine light?

 

Just bad knock sensors

 

The computer is probably pulling timing in response to the knock sensor trouble code. It does this to protect the engine and it will reduce power noticeably.

 

Okay thanks, are those pretty bad to replace?

 

Not particularly difficult. They are located beneath the intake manifold. You take care with the reinstallation of the intake manifold - the bolts need to tightened in sequence to seal properly and the torque spec is in Inch-pounds. It is a good idea to replace the wiring harness to knock sensors at the same time - it is not expensive.