# how to pass emission with no cat ??

**URL:** https://forums.speedlife.net/t/how-to-pass-emission-with-no-cat/204004
**Category:** PittSpeed Automotive
**Created:** [October 23, 2009, 2:40am UTC](https://forums.speedlife.net/t/how-to-pass-emission-with-no-cat/204004 "2009-10-23T02:40:45Z")
**Posts on this page:** 1
**Showing post:** 21

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### Author: ![neonracer01](https://avatars.discourse-cdn.com/v4/letter/n/9fc348/32.png) [@neonracer01](https://forums.speedlife.net/u/neonracer01)
#### Post date: [October 24, 2009, 6:16am UTC](https://forums.speedlife.net/t/how-to-pass-emission-with-no-cat/204004/21 "2009-10-24T06:16:28Z")

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> [@CALLOUT: Idiablo233](https://forums.speedlife.net/t/callout-idiablo233/41324/120):
>
> [http://www.3800performance.com/Merchant2/merchant.mvc?Screen=PROD&Product\_Code=O2-EMU&Category\_Code=EB&Product\_Count=14](http://www.3800performance.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=O2-EMU&Category_Code=EB&Product_Count=14)
> 
> might wanna email them, i haven’t bought from these guys in several years. none of the common vendors show O2 sims anymore

i sent them an email and they still have them …  
i was reading the artice on how to build my own and it says that it can cause a lean or rich condition, will this one from 3800performance do the same ?

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