this is crazy. the cars wants to stall out around 5000 and also wants to miss badly through out the rpm band but not all the time. so far i have changed the fuel filter, checked the plugs, changed the secondary fuel pressure regulator and also have tried talking to it

 

Any mods? Turbo or n/a?

 

n/a no mods

 

i know it works for the 3.8k hes but try grounds