Cat question

[4WD 4RNR]

Thinking on doin a borla single in dual out exhaust system. My question is can I delete the second set of cats with out any issues with codes or o2s. I know there just afterburners but do they need to stay? Thanks in advance.

 

[SkylineGTRracer]

yes, the o2 sensors just read the two on the exhaust manifolds.

 

[oljedi11950]

Quick ? skyline what happens to the o2 rears ? just leave unplugged ?

 

[SkylineGTRracer]

You need to keep the sensors plugged in. If you delete the front primary cats then you'll want to run an o2 sensor simulator to prevent a cat related cel.