Long tubes and rear O2 sensors

[georgealtemus]

From what I've read installing longtube headers on a 99 up means you need a custom tune to delete the rear O2 sensors.I already have a predator tuner and don't want to spend more for another tune.Has anyone just welded in two more O2 bungs ? That way everything will work with no check engine light.Just wondering if anyone ever tried that???

[Low97tahoE]

if you get an exhaust shop to mate your factory y pipe to the headers then u can use the original Y, cats, and sensors

[GMstrong]

The rear o2s are just to make sure the cat is working,So unless your running cats you will have the check engine light on.or tune em out like you said,or you could buy 2 o2 sims.