i deleted my cat on my 2001 prelude and ithrow CEL and its the cat cat O2 sensor i want to know how to make it go away or how to delete it by tuning or something please help tired of running rich fuel

 

r u saying the o2 plugs into the cat? if so thats ur prob..of course its gonna throw a cel..put a cat back on it...

 

If you run a chipped ecu you can cross off the o2 sensor. That is your only way to make you CEL disappear or take the bulb out.

 

I had to cut the cat of my lude cus I blew the first motor up n we couldn't get the bolts to break loose from the downpipe so we cut the cat off n there was a O2 sensor in it when we welded a pipe in the place of the cat we plug the O2 back in n just zip tied it to the heatshield under the car n I have. Had a CEL since we swapped motors n I'm 99% sure its throwing the second O2 code on the car I want to know how to get it deleted so it will quit throwing it n would I have to switch to ODB1 too?

 

Jump your ecu to see what exact code its throwing. And switching to obd1 is the only way to cross it off.

 

So how do u go about to switching from obd2 to obd1 then