Thatonez71

I installed a Texas speed stage 2 cam in my 2014 Silverado 6.2 during the tuning the tuner mentioned lots of misfires on cylinders one and three and showed the 02 sensor graph line was flat. I’ve moved spark plugs, wires, coils and retorqued the rockers and the issue has not went away any ideas what this is before I tear down too far