99blkgs Posted October 22, 2007 Share Posted October 22, 2007 i want to remove my cats and replace it with an aftermarket header and down pipe and also o2 sims. i was wondering do the o2 sims completely replace the o2 sensor or go in between them and the header?? thanx in advance Quote Link to comment Share on other sites More sharing options...
smooth1 Posted October 22, 2007 Share Posted October 22, 2007 ????? go in between them and the header? I'm not sure what you mean by that, but, yes, they replace the sensors. Quote Link to comment Share on other sites More sharing options...
99blkgs Posted October 22, 2007 Author Share Posted October 22, 2007 ????? go in between them and the header? I'm not sure what you mean by that, but, yes, they replace the sensors. oh yea thats all i wanted to know pretty much thank you Quote Link to comment Share on other sites More sharing options...
TRD911 Posted October 22, 2007 Share Posted October 22, 2007 The post cat O2 sensors are fairly easy to replace / bypass / simulate. I have an 00 Tundra V8 that I designed and built a circuit to bypass them. All the post cat o2 Sensors check for is cat performance. THEY ARE NOT RESPONSIBLE FOR ENGINE MAPPING. B Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.