does anyone know who to put headers on a 05 civic dx with out throwing codes. the cat and the manifold are made as one, i know there are a few companies the make a combo but i don thtink its really a cat i think it just has o2 bungs

 

Are you asking that you have headers and you're throwing codes, or are you asking if headers throw codes?

 

nah im saying on the dx the header and cat is made together how can i put a header on my car with out throwing codes.

 

o2 simulator might help ...

http://www.civicforums.com/for....html

 

yeah but if it dont work im screwed

 

sorry i misread your post ... for a dx the d17a1 (non vtec) the header is different than the d17a2 (vtec). if you would like to install a performance header you would need to get a high flo cat and header combo meant for the dx/lx, because the o2 sensors are located in dif areas. Also, since you are would be using a "hi-flo" cat, your car will throw a CEL code. to prevent the code from throwing use an o2 simulator (i did and it worked fine for me). i had a HP header and hi flo cat (which does bolt up to the stock catback).

 

where did you get it?

 

Please search next time you have a question. The answer is usually out there.

https://honda-tech.com/zerothread?id=2208675
https://honda-tech.com/zerothread?id=2131152
https://honda-tech.com/zerothread?id=2034668
https://honda-tech.com/zerothread?id=1973626