: Need to turn off O2 sensors after header install



WVESV
07-04-12, 07:15 PM
I had Kooks long tube headers and a Kooks catt'ed Y-Pipe installed on my 2007 ESV and I keep getting the codes P0420 and P0430 for both banks of O2 sensors. I think this is telling me that the computer is not seeing a large enough drop between the upstream and downstream sensors. Can I make an adjustment in the computer that will stop these codes from popping?

chevyracer
07-05-12, 10:38 AM
ya those can be turned off , your gonna need to take it to a speed shop that works on LS engines