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  1. Alhasawi

    Alhasawi Member

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    Could anyone tell me which is better to put 3” pipe or 3.5” pipe for cat back
    I have a factory here and they are welling to make both as i want as the owner recommended the 3.5” but as i see in the market most are 3” pipes
    Anyone have any ideas and whats the difference and benefits please
     
  2. Gary E

    Gary E Full Access Member

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    Actually, neither if true dual exhaust is being installed. The head pipes from the exhaust manifolds are 2.5". That size is sufficient for a true dual exhaust on stock 6.2 engine. For those that are staying with the stock 2 into 1 Y pipe system or close there of, the stock 2.5" head pipes go into a 3.5" Y pipe, then gets necked down to 3" at the resonator.
     
    reaper1441 likes this.

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