i was reading on myevostore.com and it states" 2006 Evolution Installation Issue: This exhaust requires an o2 sensor plug in order to be installed. In 2006 Mitsubishi USA placed the o2 sensor on the catalytic converter instead of on the cat-back mid-pipe." so would i have to by an additional part?

 

you would just need an 18mm plug for the o2 sensor bung.

I have the greddy ti on my 06 MR.

 

you can find 'em on ebay, ATP turbo has them, and so does Cal @ Speed Element as far as I know

 

is it just a plug for the hole in the piping so it wont leak??

 

http://cgi.ebay.com/ebaymotors/18mm-...ayphotohosting

 

WORKS Exhale cat-back uses the 18 mm plug also.

 

I did not buy anything, i just installed my stock 02 sensor on to the greddy Ti exhaust plug. no CEL yet. and did not need to plug anything (used stock 02 as plug)

 

IX needs to plug the hole, VIII does not. IX sensor is in the cat vs. cat back on VIII's.

 

If your only changing the cat-back, then yes you have to plug it. i went with the DC DP which delets the cat and has no plug on it at all. so i had to move the 02 sensor down and bolt it on the greddy catback.
hope this clears things up.

 

will another o2 sensor from a lincoln navigator fit until my cat delete pipe comes in?? I am in the proccess of installing it at the moment