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Catalytic converter

Discussion in '2nd Gen Tundras (2007-2013)' started by CarolinaSupercharged, Oct 20, 2020.

  1. Oct 20, 2020 at 1:21 PM
    #1
    CarolinaSupercharged

    CarolinaSupercharged [OP] New Member

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    I have a 2011 tundra with OEM TRD supercharger installed, which I bought like that. It also has the OEM cat converter on it. Long story short, I spoke to a local mechanic, Toyota dealership, autozone parts store and an online racing parts store. I'm getting so many different stories about which new cat I should get, I don't know what to do.

    Local mechanic said he's surprised I have oem on Tundra that has a supercharger. He think I should at least have aftermarket.

    Dealer said that changing to an aftermarket cat will cause check engine light to stay on forever. He said Toyota computers can't be reprogrammed to an aftermarket/high flow cat.

    Autozone parts store said I should get high flow cat which they don't have.

    Online racing parts store said I shouldn't get a high flow cat unless the dealer can reprogram computer.

    I'll add, OEM cat is dang near 2 grand for each side! I'd much prefer aftermarket solely because of that reason.
     
    Silverghost likes this.
  2. Oct 20, 2020 at 2:06 PM
    #2
    blackdemon_tt

    blackdemon_tt Battery Slayer

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    LOL... first of all, mechanic is full of shit.... CATs are not programmable, its like programming your tires to your wheels and truck, I'll leave that there... I had a mechanic reject smogging my 92 MR2 Turbo, because he claimed Toyota never turbod any car, I guess the Supra, the Celica ALL TRAC and MR2 were built by someone else, either way...

    Depending on your state, I'd suggest you look at that first.. Some states like my state of Cali, I can't get just any cat, has to be approved by the CARB process so Magnaflow or OEM are my options..... a high flow cat can work pretty good, but like any CAT if you're burning oil not even an OEM cat will last 2 years... A muffler or exhaust shop can better guide you on this subject. I replaced my Celica's CAT earlier this year for $300 and 250 of that was the CAT..... Hope this helps...
     
  3. Oct 20, 2020 at 2:17 PM
    #3
    timsp8

    timsp8 Member

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    When I put new headers on my SC 2010, I tried to use the O2 simulators at first but had issues with them. Then I bought some high flow cats and had a local shop weld them in and never had issues again. I’ve heard the SC will blow out stock cats.
     
    Black Wolf likes this.
  4. Oct 20, 2020 at 2:20 PM
    #4
    timsp8

    timsp8 Member

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  5. Oct 20, 2020 at 2:22 PM
    #5
    jalam321

    jalam321 New Member

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    Just curious why are you changing the cats? Are they bad? Or you want to upgrade to high flow cats for performance? I do understand if you are wanting to get some more performance. When I was younger, I ran with no cats on some cars. Looking back now, it was dumb bc I would get out of the car smelling like exhaust fumes lol. On my Corvette, I have high flow cats that pass inspections
     
  6. Oct 20, 2020 at 2:22 PM
    #6
    blackdemon_tt

    blackdemon_tt Battery Slayer

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    No need to reprogram the ECU... I understood that portions, hence why I mentioned programming the tires to the wheels, makes no real sense...
     
  7. Oct 20, 2020 at 2:26 PM
    #7
    timsp8

    timsp8 Member

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    Sorry, I misread your post. I edited my post.
     
    blackdemon_tt likes this.
  8. Oct 20, 2020 at 2:27 PM
    #8
    blackdemon_tt

    blackdemon_tt Battery Slayer

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    No worries, I may have typed faster than I was thinking...
     
    timsp8 likes this.
  9. Oct 20, 2020 at 2:28 PM
    #9
    Larly5000

    Larly5000 New Member

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    The factory cats are going to be higher quality than most of the cheap shit, aftermarket “high flow” cats out there. Make sure you research it before you pull the trigger.
     
    blackdemon_tt likes this.
  10. Oct 20, 2020 at 2:31 PM
    #10
    timsp8

    timsp8 Member

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    If you search online there are posts and websites about supercharged tundras and burned up cats. Even the ones I posted above might burn out after so long. But they are cheaper than oem even with paying someone to weld them in.
     
    blackdemon_tt likes this.

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