Not exactly sure on the trucks but on the F and Y body's and for hybrid's you can delete the rear O2's as they are for emissions. The forward O2's are for fuel management. You could delete them and run in closed loop all the time but this will take some special programming and not be cheap as it could take multiple programs to get right.
__________________
'68 Short Step
LS1/T56, Hydratech, Fatman Fabrications Stage III, Baer, Hot Rods to Hell, US Body, S&W, etc
|