# CEL for Cat. Converter

**URL:** <https://forums.speedlife.net/t/cel-for-cat-converter/40955>\
**Category:** NYSpeed Automotive\
**Created:** [December 29, 2007, 5:21pm UTC](https://forums.speedlife.net/t/cel-for-cat-converter/40955 "2007-12-29T17:21:48Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![Jeller](https://avatars.discourse-cdn.com/v4/letter/j/bc8723/32.png) [@Jeller](https://forums.speedlife.net/u/Jeller)\
**Post date:** [December 29, 2007, 7:37pm UTC](https://forums.speedlife.net/t/cel-for-cat-converter/40955/7 "2007-12-29T19:37:24Z")

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What do you have to scan codes?

Thinking about this more, just pull them both off, clean out both cats (its a little bit of work, bashing the insides out) then just mod the rear o2 sensor (the tattle tale senor of the 2 sensors).

All this assuming you will be able to get at the front cat also.

Jeller

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