I recently ordered a Magnaflow exhaust (part number #16660) for my 2006 Evo IX and I'm hoping somebody can answer my question. I'm installing the exhaust right now and it is an open pipe (no cat) with an insert for your o2 sensor. Is my check engine light going to come on all the time if I install this exhaust?

 

Yes sir unless you buy a o2 sim

 

After my exhaust the CEL didint come on for about 1000 miles but after that it has never gone off and its been about 7k or so since. I dont mind it because I have the Daul steering column pod in front of me and I cant even see the light now lol But I cant see my gas gauge either which is the only downfall of the pod i have

 

Where do you get the o2 Sim?

 

I cant remember I think Perrin has somehting for it or Bushur racing maybe??? And I think if you search over on EVOm there is a thread on how to make your stock o2 work as a sim somehow

 

Is there anything else that will be effected when I put this O2 sim on my car? I believe this O2 sensor is only for verifying the cat is working correctly so nothing else should be effected...I hope?

 

I've been browsing the web and many guys have taken two spark plug non-foulers and threaded them into the bung and then put the O2 sensor and successfully kept the Check Engine Light off. Have you hear anything about this?

 

I installed the Magnaflow exhaust and it sounds great!! I love the deep tone and so far no CEL light. I went with the Spark Plug Non fouler method. I would recommend a Magnaflow to anybody and make sure you purchase it on ebay. I bought a brand new catback system for $400.00.

 

good deal. So wait its a catback, do you have the downpipe too.

 

Yes, it's a cat-back exhaust system and I bought a test pipe separately. There isn't a downpipe with the system but I'm not sure I'm going to change out the downpipe. My next step is to get a ECU FLASH from Vishnu. I asked them if I need to make any other mods before the FLASH.