# The FRC Project **URL:** \ **Category:** Builds\ **Created:** [July 29, 2008, 8:58am UTC](https://forums.speedlife.net/t/the-frc-project/238038 "2008-07-29T08:58:19Z")\ **Posts on this page:** 1\ **Showing post:** 58
**Author:** ![zee\_oh\_sex](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/zee_oh_sex/32/6451_2.png) [@zee\_oh\_sex](https://forums.speedlife.net/u/zee_oh_sex)\ **Post date:** [May 9, 2010, 7:29am UTC](https://forums.speedlife.net/t/the-frc-project/238038/58 "2010-05-09T07:29:38Z")
> [@who else is planning on blowing up......](https://forums.speedlife.net/t/who-else-is-planning-on-blowing-up/31715/32): > > he didnt have a cell come on…atleast for the 20 minutes after before we left he didnt. > > His setup used all 4 o2 sensors…the rear stockers mounted right up and we just had to extended the fronts by about 2’. > > if you are worried about it, I have two o2 simulators I will sell you for cheap. Im sure you know what they are/do so no need to tell you about them > > other then that, yes it will get tuned out if you get a tuned. Yeah i know what they are, they are the same thing as MIL eliminators. I’d pick them up off you if/when i do my headers and X. > [@Shutup about the iPhone already...](https://forums.speedlife.net/t/shutup-about-the-iphone-already/31491/142): > > No CEL came on for me. Like Smokkin said the system is bunged for 4 02 sensors. I drove around for a good two hours yesterday after the install with no CEL lights. That blows my mind…without o2 simulators? I dont know how you dont have a CEL, even though you used all 4 o2 sensors (which most of the header/x kits do), your cats are still gone!! The up-stream o2 sensors are for engine management and the downstream o2 sensors basically just check to see if your cat is working IIRC. If there is no cat, WTF!? Its obviously not working LOL. --- _[View the full topic](https://forums.speedlife.net/t/the-frc-project/238038)._