Hi guys , I converter my car race with a turbo charged 383ci ls1 runing on e85 to a power glide and i haven't wired up the vss as there is no provisions in the box etc and its not street driven any way but i just woundering if the 411 ls1 pcm will default to the base spark tables etc instead of the main spark tables etc I still runing my old auto tune with all the dtcs , torque settings etc turned off, vehcile seems to run fine etc, has any one struck any probs before. - thanks