I replaced the downstream O2 sensor, noticed it was bent and now need to replace and/or hollow-out the CAT.
Does anyone know the exhaust diameter at the CAT for a 2006, LS, with a 2.2L engine? I'm trying to get my parts lined up for the next break in the rain.
Searching shows 2 1/4 for the 2.4L but I couldn't find any info for the 2.2L.

Thanks in Advance.

 

Easier to replace with a larger pipe , mandrel bent . I used this one in my 2007 2.2 LS

https://mufflerexpress.ca/products/c...rter-2005-2007

 

Thank you for the link.
Does anyone know the exhaust diameter at the CAT for a 2006, LS, with a 2.2L engine?

 

Google "GM Parts Direct" and use the link for your car as per engine size.
Then use it for the 2.4 engine and see if it's the same part number.

 

So you replaced the #2 O2 sensor and it's bent ?
Why do you think of gutting out the the cat ?
Pictures please.
Don't know what your explaining or trying to do.

 

Or you could measure...

 

Person has a problem with the problem.
I think the tape thing will really get confusing.

 

Sorry I forgot that part 1 3/4 od, but trust me cutting the pipe and only replacing the cat is a PITA, been there then ordered the down pipe I posted earlier.