Flatline1980

I was driving home tonite and my lite come on.. As soon as i got home, i pulled out the sct x3 and checked the codes.. i was hit with the PO133 and PO153.. I came to the board and hit the search button.. I got a few hits but no real answers.. Has anyone else had this problem?? I've had my LT Headers for about a month now.. I like the sound and power.. I have a Brenspeed tune.. I was wondering if it took this long for the computer to see that the back sensors ain't working?? If this is the case, how would i do that through the tuner?? If its not that, what has anyone else seen that i is?? Want some help on this.. Thanks folks..

onederful100

those are your 2 front O2 sensors slow to read. could be your tune.

2007VistaBlueGT

Might be your Tune. Or other possible causes.

• Contaminated HO2S
• Exhaust leaks
• Shorted/open wiring
• Incorrect fueling
• MAF sensor
• Deteriorating HO2S
• Inlet air leaks

Flatline1980

thanks y'all.. i'll check them out..