F250 Catalytic Converter Removal?

Discussion in 'Ford Truck Forum' started by Lariat, Aug 25, 2008.

  1. Lariat

    Lariat Senior Member

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    I have got a 03 F250 4WD w/V-10 and would like to remove the cat from the exhaust and put a straight pipe in its place. Will I have any vehicle computer issues? Anybody have a good manufacturer for the straight pipe?

    Lariat
     
  2. 436'd skylark

    436'd skylark Senior Member

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    Yeah your light will pop on alomst immediatly. The newer style cats don't really hurt performance as much as the old ones. you probably won't feel a difference at all.
     
  3. Lariat

    Lariat Senior Member

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    Any way to trick it? What is there a sensor mounted to the Cat?
     
  4. 87c10slammer

    87c10slammer Senior Member

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    its not on the cat. but it is inline withthe exhuast. they sell o2 sensor similators to trcik the computer but have never used one. dont have a vehicle new enought that i wanna do it to. lol. your best bet is to let it be just do staight pipes after the cats. they will accually do more good then bad. just disconnect your exhuast after the cats and see what it sounds like.
     
  5. 75K30

    75K30 Senior Member

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    V-10's do not sound all that great with the muffler removed. I do not even like the sound of the flowmaster on a ford V-10.
    Your biggest restriction is in the exhaust crossover, and the tiny little stock manifolds.
    I have enjoyed the sounds of Borla's, and especially the round Ultra-Flo's from Dyno max.
    Dyno Max race bullets sound nice too.
     
  6. Lariat

    Lariat Senior Member

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    Are the Borla's and the Ultra Flo's Cat-back exhausts? I am trying to release pressure to increase MPG.
     
  7. 87c10slammer

    87c10slammer Senior Member

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    you can have one made at your locall exhuast shop. most of the time they are cheaper. i have saved 200 bucks just by bying a flomaster muffler and having them bend up some stainless pipe for me. then i cut and welded it myself
     
  8. 75K30

    75K30 Senior Member

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    Your existing system flows fairly well, after the cat. You can add just a mufler, and weld in a new crossover. That little tiny crossover is a very restrictive component in your stock system.
    There are aftermarket X-overs available for the SD and Excursions.
    Just take a close look at the factory exhaust manifolds, and the pinched up factory x-over, and you will see.
    The size alone will be its own indication.
    The big names sell complete kits, but these are often pretty spendy, and while they look good, they can take many years to realize a savings in gas.
    But, yes the above manufacturers have cat back systems available for easy installations.
     
  9. 436'd skylark

    436'd skylark Senior Member

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    your mileage isn't going to increase by hacking the cats off. Your never going to get great mileage with that truck unless you go diesel.
     
  10. gmctrucks

    gmctrucks Full Member

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    Don't remove the cats if you do replace with free flowing cats Magna flow has some real good one's. I'm hugging a tree right now writing this letter im using my lap top. I love my tree she's so good im getting a little wood right now it's from a branch. LOL
     

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