I just got back from tuning at Jotech and the check engine light came on. I checked the codes and it gave me codes 45 and 67. 45 well the fuel is lean or rich. and 67 well no convertor. Testpipe has the o2 sensor. Is this okay since it has already been tuned?

 

sounds like maybe an O2 sensor might be crapping out or something. Im assuming they used a wideband to tune right?

 

I have no idea. I just dropped it off. It does have a light miss, but I assume it is the cams? Would a bad sensor cause any power loss?

 

"light miss?"

 

It idles like it has a miss