P0171
P0171 Car is an 03 z06. Headers, vararam, underdrive pulley, and F11 cam. Professionally tuned by a local performance shop. Current issues are P0171 code. O2 sensors have under 1000 miles on them and code showed up before they had 100 miles on them. Both are new.
Tune and scan attached. Obviously you can see the LTFTs are nuts, but what could be causing that reading? If you look at the tune, you can see that the tuner did not modify any of the part throttle fueling. Thats what I am blaming it on. What do you guys think?
Tune and scan attached. Obviously you can see the LTFTs are nuts, but what could be causing that reading? If you look at the tune, you can see that the tuner did not modify any of the part throttle fueling. Thats what I am blaming it on. What do you guys think?
Last edited by A-Dub; Feb 25, 2008 at 09:33 PM.
Cleared it, came back after 3 driving cycles. It has fresh GM MLS gaskets up top and blocked off AIR fittings. I'm going to have him check for bad welds at the collector
