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catalytic converter

  1. Catalytic Converter went bad, NOT sure why.

    2005-2010 V6 Mustang Tech
    My 2007 Mustang V6 (over 140,0000 miles) started to make a noise, which sounded like metal hitting metal. At first it was barely audible, but then last week it got even worse. I would hit the gas and the metal hitting metal sound was loud and clear inside the car. When I popped the hood it...
  2. No Cats In NC??

    2005-2010 Mustang GT Tech
    Have any of yall in north or south Carolina who have done catalytic converter delete had any trouble with the law or passing inspections? Thinking about doing it to save some money.
  3. 2006 Mustang V6 Convertible rattle

    2005-2010 V6 Mustang Tech
    2006 Mustang V6 Convertible has a loud rattling noise coming from underneath the car about where the shifter is. I don't know if it matters, but it is much louder and consistent when the air is on. I've heard it could be the heat shield for the exhaust or possibly the catalytic converter. Has...
  4. Exhaust hose blowing off EGR position sensor

    4.6L Tech
    I'm currently dealing with an issue with a mustang I just bought that has been sitting for a year. After replacing the fuel pump and a new battery, I was able to get her running. Problem is I have a serious lack of power and around 3k RPM the exhaust hose that hooks up to the EGR position sensor...
  5. continue to get error codes after off road x pipe instal

    Mustang Tech
    Hey guys I have a 2007 Mustang GT, I have installed long tube headers and an off road x-pipe about 6 months ago. I have been getting error codes P0133,p2195,p2196,p2197 ever since. I did install a tune using and SCT tuner from brenspeed, and I have replaced the 02 sensors but still keep getting...
  6. Help with 2006 Mustang GT Exhaust Diagnosis

    2005-2010 Mustang GT Tech
    Hi - I'm hoping the forum members can help me confirm / diagnose what type of exhaust system is presently on my 2006 Mustang GT and make some recommendations on replacement parts. I don't know the history of the car so I've been reading through the forums and trying to make some educated...
  7. 2011 GT with procharger -- replaced both catalytic converters after 36k miles

    2011 - 2014 Mustang GT Tech
    My 2011 5.0 has only 36,000 miles on it but I've already replaced both catalytic converters in the last year and my check engine light is on (again) and it is throwing a P0430 code. What would cause this? Could it be related to my supercharger? I can't afford to keep replacing the cats...
  8. Advice wanted for deleting cat converters, 1996 GT, can anyone help?

    4.6L Tech
    Right, I have the rear section of my exhaust already done, its a custom built S/S system from the connection pipes after the cats. It doesn't have back boxes but 'boosters' which are basically empty high flow mufflers that just keep the cops happy if they look underneath. (here in England you...
  9. 2003 V6 Mustang front of catalytic converter exhaust pipe cracked

    V6 Tech
    So my 2003 V6 started making a loud noise and upon investigating I could see that the factory welding on the exhaust before the catalytic converter has come off. I have seen many threads which say that the A/C drips off on the manifold on the passenger side and it's a common problem for the...
  10. How can I Cat-Delete on 2005 Mustang GT and still pass state inspection.

    2005-2010 Mustang GT Tech
    I am really wanting to do long tube headers on my 2005 Mustang GT, but I didnt realize this means no cats on my car( as far as i know, please correct if im wrong). This is an issue seeing as it is my daily driver and im going to need to pass Texas state inspection in March. I have a C&L intake...
  11. possible punishment for off road x pipe

    2005-2010 Mustang GT Tech
    What's the worst possible punishment for getting caught with an off road x pipe on the street? Any fines? If so how much? Does anyone have any experience with that? Please share if so... How could I even get caught with one in the first place? Thank you all for your responses I greatly...
  12. Hollow cats, good idea? or bad?

    2005-2010 Mustang GT Tech
    I'm debating hollowing out my cats on my stock h-pipe, I'm not expecting any significant performance gains, but I would like the added sound for my stock 07 GT. Where I live there is absolutely no emissions testing, so that's not an issue. Do you guys think this is something worth doing in my...
  13. 1986 5.0 Catalytic converter questions.

    5.0L Tech
    Hey everyone, so I've accomplished one of my life dreams, which is owning a mustang :) Last week, I bought a used 1986 5.0 mustang convertible and the original owner told me during the test drive that the catalytic converter rattles sometimes but then goes away. I was informed that this means...
  14. Installing Catalytic after mid-pipe?

    2005-2010 Mustang GT Tech
    I have stainless steel headers and h-pipe with no catalytic converters. It's inspection time and I want to pass with no problems. I want to put the catalytic converters after the h-pipe because I will be getting rid of it for a turbo system. I also think it will be much easier to install in the...
  15. Emissions Failed on my 2002 Mustang GT

    4.6L Tech
    I failed emissions testing on my 2002 gt and I was told I need a catalytic converter and an o2 senser. The emissions guy said the converter will cost me around 800 dollars but Im finding them for 200 on websites. Is there a type of converter I need to buy? The service engine light passed and...
  16. 2001 mustang 3.8L catalytic converter replacement

    V6 Tech
    Hey guys having another issue with my 2001 mustang v6 3.8L a while back i had the catalytic converters on the driver side replaced cause i was told the were bad and cased the check engine light to come on. well when they were replaced 2 completely different ones from the orignal ones were used...
  17. Do I need new Cats? Not for performance but for maintenance...

    2005-2010 V6 Mustang Tech
    Cats are supposed to last a good while. I have 141K on my car. I know that if it's time to change them, a check-engine light will go off. Recently during idle I'm smelling a fuel odor coming from outside, can this be a pre-mature sign for new cats? Thanks guys!
  18. Exhaust system swap: damn near impossible

    5.0L Talk
    Disclaimer: This is more of a rant than a question. I bought my 87 LX with a "straight" H pipe on it, no catalytic converters. I was trying to re-install the factory setup with the 4 cats in it so I will have a chance at passing smog. I managed to get all of the bolts out of the H pipe, but...
  19. 2000 Mustangs P1406 & P0402 code help

    V6 Tech
    My stang: 2000 3.8 v6 – Automatic/Convertible My situation: All of sudden, while driving, my stang got “slugglish”… Idled rough, wanted to die, but never did. Went to Autozone/Advanced Auto to get codes. P1406 - DPF-EGR Sensor Upstream Hose Off or Plugged DPF-EGR Sensor Downstream Hose Off...
  20. 92 2.3 sputters,pings,pops,and stalls on hot days

    2.3L Tech
    Thanks for reading my post.I've got a 1992 mustang lx conv. 2.3 vin m. The car runs good most of the time except in the summer on sunny days when the temp is 90+(this is my second summer with this problem).I'll be driving for 20 mins under regular conditions and my car will start to bogg,then...
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