Help me understand what's happening here.... N54 , 6AT, PS2, e50/meth tune.
Getting major timing corrections up to -8 deg and its random cylinders but noticing mainly 2 & 5. Ran the same tune 2 years ago with minimal to no correction so its definitely not in the tune either and I definitely have enough octane and meth to support 28psi & 12deg timing advance. aside from the major corrections I have been getting super knock and sometimes random misfires.
all parts s are new which include coded injectors, 2 step colder pugs gapped to .018, eldor coils etc...
I'm getting the impression it may be something causing a vibration at higher rpm causing the knock sensors to trip... crank pulley looks good and balanced while spinning. a few ppl have mentioned motor mounts....is this possible? and how can I guarantee that's the issue without throwing parts at it?
Getting major timing corrections up to -8 deg and its random cylinders but noticing mainly 2 & 5. Ran the same tune 2 years ago with minimal to no correction so its definitely not in the tune either and I definitely have enough octane and meth to support 28psi & 12deg timing advance. aside from the major corrections I have been getting super knock and sometimes random misfires.
all parts s are new which include coded injectors, 2 step colder pugs gapped to .018, eldor coils etc...
I'm getting the impression it may be something causing a vibration at higher rpm causing the knock sensors to trip... crank pulley looks good and balanced while spinning. a few ppl have mentioned motor mounts....is this possible? and how can I guarantee that's the issue without throwing parts at it?