Just put the blower and everything back on it and took it for a drive to see how the meth injection was gonna do and see if I cured the knock problem and was loading the engine pretty good when it backfired a couple times then would barely run. It would give me no more than 5 degrees timing no matter what. I got no codes either. Sound like the opti or ICM or what?

 

Sounds like you need to data log and see what shes doing.

 

The only thing odd showing up is the 5* timing issue. It was misfiring bad and trying to pull out fuel because of it, other than that everything was normal.

 

PCM gone bad?

Sara Lou