on these truck do you have to keep the catalytic converter senser in if you want to put an after market 1 in place of the cat

 

i dont know of a cat sensor...only the o2 sensors

 

mayby that is what it is its not on the cat its just after but not by much mm away and my truck also has 2 cats

 

yea that would be your o2 sensor youre talking about

 

so if i leave it and do that cat swap will it do any thing??? like put the s. e light on are give bad readings ???

i am thinkin about putting a cherry bomb in place of them. i saw this in a cherry bomb flyer i dont no if they really use it like that tho

 

if you pull the cats out then yes you will get a CEL