X & H pipe vs straight dual exhaust

Mopar Exhaust Systems

  1. AdamR

    AdamR Big Member

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    One of the mopar mags years back had a dyno test of Dave Dudeks old challenger were he swapped from a TTI H pipe to a TTI X pipe. He picked up some power but I dont think it was huge. Ive talked to a few guys that said they switched back to H pipes just because they didnt like the tone of the X so Im guessing the difference at the track isnt huge between the two.
     
  2. doug 371

    doug 371 Well-Known Member

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    that is a thing of beauty!!! :)
     
  3. longarm

    longarm Car sold back to original owners

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    I'm using Hooker Super Comp headers into TTI reducers
    that I got from AdamR. [Thanks]
    Its then into a Jegs 2 1/2in H pipe, then into a
    mandrel bent Jegs 2 1/2in system out the back.
    I'm on the lookout for Borla mufflers that I can afford.

    I'm not convinced the difference is worth the worry between
    the X and H pipe as long as the system is correctly sized, consistent and
    smooth flowing to the exit.

    Like everything, it is balance and compromise.

    Build is to resume this year barring any other catastrophes or unforeseen setbacks.:glasses7:
     
  4. 67dartgtgo

    67dartgtgo FABO Gold Member FABO Gold Member

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    My exhaust expert buddy told me x pipes are for circle track cars....and H's are for go straight and hot rod cars....something about certain performance flow gains at certain RPM ranges.
    He gave me an H on mine and I must say it sounds pretty awesome.
     
  5. longarm

    longarm Car sold back to original owners

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  6. Ricodart

    Ricodart Member

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    x pipe for high rpm H-pipe for average rpm both help to balance out each bank.
     
  7. dragondan64

    dragondan64 Banned

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    this design is a mix of both the X pipe crossover and the H pipe inner designed to even out the pressure to both sides, this is whats gong on my cuda this next weekend. Hope it works like they say but just using it to even pressure and pitch not worried about the extra H they claim.
     

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  8. famous bob

    famous bob mopar misfit

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    after reading all this, and from my own experiance, the H pipe was included in some factory cars for sound reduction, as the big engines didn`t need any more low end torque. the x pipe may help a smaller horse power motor, but I don`t believe it will do anything but add weight to a monster motor or big stroker set up. I fired my 505 for the first time w/ my home made dual 3 1/2" set up, it wasn`t any louder than my old 600 horse 406 sbc., other than having a big engine sound. didn`t make but one run in cycle due to a valve train noise . (parts on order)---just my 2 cents
     
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