# 04 GTP Rear 02 delete

**URL:** <https://forums.speedlife.net/t/04-gtp-rear-02-delete/201013>\
**Category:** PittSpeed Automotive\
**Created:** [December 8, 2008, 8:46pm UTC](https://forums.speedlife.net/t/04-gtp-rear-02-delete/201013 "2008-12-08T20:46:33Z")\
**Posts on this page:** 1\
**Showing post:** 28

<div class="post-metadata">

**Author:** ![SK360](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sk360/32/5933_2.png) [@SK360](https://forums.speedlife.net/u/SK360)\
**Post date:** [December 16, 2008, 7:32am UTC](https://forums.speedlife.net/t/04-gtp-rear-02-delete/201013/28 "2008-12-16T07:32:49Z")

</div>

> [@Buffalo Bills 2007 Season Discussion](https://forums.speedlife.net/t/buffalo-bills-2007-season-discussion/35063/574):
>
> turning it off at the ecu will not help the car pass emissions because it will not run the check to see if the o2 is functioning properly. I’ve been there.
> 
> Get a o2 simulator and be done with it.  
> [http://www.zzperformance.com/grand\_prix/products1.php?id=834](http://www.zzperformance.com/grand_prix/products1.php?id=834)

Thats strange, I have my rear o2’s completely disabled and removed, Cat codes, heater circuits… all disabled via HPTuners… and my emissions tests pass just fine.

Granted I dont know how much different the E40 PCM on my Ls2 is, but cant be that far off…

---

_[View the full topic](https://forums.speedlife.net/t/04-gtp-rear-02-delete/201013)._