hello, i just signed up for this forum, and i need some advice cause people are telling me different things. i dont really know anything about cars, i have an 05 gt, with long tube headers x-pipe and an sct tune from a local shop.

now i had been running without catalytic converters for about oh 3 years now, and i was tired of not being able to go anywhere to get an inspection sticker, so i went and got some high flow catalytic converters. i went to get an inspection and the o2 sensors didn't register according to the guy working at that business. he told me since the cats were new that i should go put some miles on them before i come back for a retest. so i did, didn't change anything. did it again, didn't work. now my brother is telling me i should clean em, my friend said that they are probably broken if they aren't sending any signal at all, and the guy at the service place said they are broken and i should get new ones. so what should i do!?

 

The tune you have probably has them disabled, your going to need a tune with them turned on.

 

so should i put it in the stock tune? or just take it back to the shop?

 

I would contact whoever did your original tune for you and tell them you need one with the rear O2's enabled.

 

ok ill do that asap, thank you!