I had to gut my cats this weekend (didn't want to pay the almost $2400 the dealer wanted to replace them). Of course, now my check engine light is going to stay on.

Does anyone make O2 sensor overrides? Something that will fool the computer into thinking the cats are normal?

Thanks.

 

they sell 02 sensor simulators...check the net. you can buy aftermarket high flow cats for a fraction of the price as OEM replacements.

 

Aftermarket cats are not smog legal in CA so no point in using them.

 

I dont mean to thread jack but im putting headers on my 03 scab 5.4 this weekend and I wasn't planning on using cats, does anybody know if I'll have a problem with the check engine light?

 

yes

 

the key is that your upstream o2's do not read the same as the rear downstreams. The rears are tattletales. Knew someone that removed cats and welded the bungs outside of the pipe (to read ambient) on the rears. The fronts were installed as normal. Pretty redneck but it worked.

 

You could also do the gotts o2 mod I did it when I put my long tubes on a month ago and its been working like a charm.