That's not always the solution. If you live in the rust belt, the O2 sensor can weld itself onto the cat. I had to use a huge breaker bar to get mine off. Getting the cat off of the downpipe was another story. Took my whole exhaust system to a friends house and it took about 600 ft/lbs of torque to get them loose.

 

Mine rusted dead on more than once. Use a prybar and/or a longer wrench. It's not rocket surgery.

 

This is now reminding me of the 101,000 miles of rust that's holding my O2 sensor in. Now I'm scared to try and install the CEL fix.

 

Just buy an O2 sensor simulator from summit racing for the same amount of money as the CEL fix from RRM and never have to worry about it ever again. The install is simple as hell too, splicing three wires.

 

Hey man, It is not worth the hastle to try to get that damn stock cat off . I tried EVERYTHING, but nothing worked. Take it to a shop and pay $40 to have them torch it and install the hi-flow cat.

 

10 minutes and a can of penetrating oil worth $4.97....who'd laughing now?

 

Ok guys,

I have now used a O2 Socket and 2 cans of PB Bolt buster. Guess what still not off. Now it's very rounded. Any suggestions now?

 

Cancel that last one. I just got it off. Now even after the ECU was reset I get a CEL. Did I mess up the o2 sensor some how? I baught this thing and went through all the work and it still comes on? Anyone else buy the RRM Cel elim? and have proplems? I have it in as tight as it will go. Let me know

 

Could be the 02 sensor. They can go bad. Hell, maybe that's why you got a CEL...

 

hahaha + 1 i was gonna say that

 

why were you getting Cel to being with?

 

I was getting the CEL because I installed Kamakazi Headers, and of coures it removes the pre cat.

 

Maybe the time you ran without the CEL fix torched your O2 sensor?

 

I was going to suggest just replacing the O2 sensor, until I saw that they cost almost $300.