Installed cam on truck a while back and ran fine but after that I installed p1sc Procharger and keeps pulling that up. Already changed spark plugs and wires a few times but don't know if I need to change coils or injectors. Got new injectors but haven't installed them yet. Any opinions on what might cause it. Also have noticed a ticking sound from driver side headers but its not a exhaust leak but thinking its a electrical problem causing ticking.