Heads/Cam/Headers LS3 Vette.
Take a look at the log. At just about all lower air flow ranges the drivers side adds significantly more fuel than the pass side. Wideband was not connected on this run.
Installed new factory 02 sensors.
Disabling fuel trims makes the car run rough at low rpms. It seems to want the fuel which makes me think air leak.
Stock ls3 intake manifold. Replaced intake gaskets and issue continues.
Installed new plugs. Old ones looked fine.
New MSD wires.
I checked manifolds and collectors for leaks with stethoscope. None found. Still changed gaskets at request of vendor. I am almost positive there are no leaks before or around the 02 sensors.
Motor seems healthy. Runs very well wide open throttle and fuel seems spot on to what I command at WOT according to wideband.
I'm running out of ideas. Could the installer have cracked the intake manifold with too much torque on bolts? Cracked around one of the driver side ports so only affecting that side?
Using extensions that came with ARH headers. About to swap extensions to opposite sides just to check.
Have another set of stock injectors I may try.
Drive 5 is with fuel trims enabled still. Other is with them disabled. After WOT run on disabled log it felt like it was missing and wideband would fall off the scale lean at times.
Thanks - Sorry such a long post
Drive 6.hpl
Drive5.hpl
17.hpt
LS Gen 4 Auto.cfg