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Thread: Straight Mid Pipes?

  1. #1
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    Straight Mid Pipes?

    Would it be beneficial to have straight pipes, with highflow cats and aero2525's coming off the headers. Emissions and inspections are not an issue for me. I was wondering if I would lose TQ and/or HP? And would it sound good or bad?
    ┼∞█The Black Bomber█∞┼

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    CURRENT PROJECTS - Doing what Ford should have done and gutting the interior...Stay tuned. It's a rather large project.

  2. #2
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    Straight pipes as in what, just dumping under the car, out the side?

    What are your plans for the car? If primarily a street car, why not keep the stock exhaust configuration out the back?

    Are you looking for noise?

    Don't think you'd pick up a whole bunch of power with this set up, but I could be wrong.
    Last edited by SC Cheesehead; 04-23-2012 at 12:57 PM. Reason: added stuff

    2003 300B DBP
    Build date: 6/19/03
    Number 7,792 of 7,838 - 326 of 328
    Proud member of the MM "BLUES" Bros.
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    Eaton swap by ImpalaSlayer 11-09-10

    Semper et in Aeternum, Mercurius.

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  3. #3
    The section of tubing between the cats and the rear muffler on cars that have two parallel exhaust pipes. Performance mid-pipes often have a perpendicular connecting pipe or the pipes temporarily merge. This is to equalize the pressure in both exhaust pipes and keep the engine back-pressure as low as possible since back-pressure is detrimental to high-end power.

    You want an H-pipe while being or staying NA. The cross-over equalizer tube helps scaveging the exhaust better.

    Here is a picture of my H-pipe, you can see how even the coloring of the pipes is which means I am getting even flow from both sides.
    Last edited by ctrlraven; 04-23-2012 at 01:13 PM.

    2004 Silver Birch
    300B
    Build date:9/29/2003, Adopted on 12/02/05
    Exhaust by Greg
    13.630 @ 100.49 mph (11/21/10)

    2015 Ford Focus SE Sport FWD
    2013 Lincoln MKS EcoBoost AWD (377whp/423tq).
    2010 Ford Fusion Sport FWD
    1989.5 Ford Mustang 5.0 LXsport

  4. #4
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    What I mean is for each side to have: headers to cats to muffler to tip. All straight; no connection in the middle.
    ┼∞█The Black Bomber█∞┼

    Aftermarket Sun Roof, Spoiler and Heated Seats, BC4E Dead Pedal
    PERFORMANCE - ADCO Front and Rear Sway Bars, K&N FIPK Air Intake,
    XCal2 Tuned by DR
    LIGHTS - Self-built HID projectors, True 3000K Osram Foglights
    SOUND SYSTEM - Infinity Reference Speakers All Around, Infinity Reference 4 Channel 465W AMP, 2 10" Audiobahn Subs in Enclosed/ported box
    APPEARANCE - Tints w/Windshield Eyelid, SS Inserts, S55 Tail Light Treatment, Full Interior LED Upgrade w/Guages and Cluster, CMS Gods Head Conversion, Custom Floor Mats From CarMotorsports, satin pedals, self-built black and silver pinstriped interior trim and accents

    CURRENT PROJECTS - Doing what Ford should have done and gutting the interior...Stay tuned. It's a rather large project.

  5. #5
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    Quote Originally Posted by bolsen View Post
    What I mean is for each side to have: headers to cats to muffler to tip. All straight; no connection in the middle.
    Quote Originally Posted by ctrlraven View Post
    The section of tubing between the cats and the rear muffler on cars that have two parallel exhaust pipes. Performance mid-pipes often have a perpendicular connecting pipe or the pipes temporarily merge. This is to equalize the pressure in both exhaust pipes and keep the engine back-pressure as low as possible since back-pressure is detrimental to high-end power.
    ^^^^^^
    I think you'll want the connecting pipe between the two sides to equalize pressure in the system, that's the reason for X or H pipes.
    Last edited by SC Cheesehead; 04-23-2012 at 01:05 PM. Reason: added stuff

    2003 300B DBP
    Build date: 6/19/03
    Number 7,792 of 7,838 - 326 of 328
    Proud member of the MM "BLUES" Bros.
    Purchased: 11/10/05
    Eaton swap by ImpalaSlayer 11-09-10

    Semper et in Aeternum, Mercurius.

    In Memory:
    2004 DTR
    Build Date 01/27/04
    Purchased 04/04/04
    Wrecked 10/19/05, R.I.P.



  6. #6
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    Quote Originally Posted by SC Cheesehead View Post
    ^^^^^^
    I think you'll want the connecting pipe between the two sides to equalize pressure in the system, that's the reason for X or H pipes.
    You really need to go with an X or H pipe.
    “When you can’t make them see the light, make them feel the heat.”
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  7. #7
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    Which one is better?
    ┼∞█The Black Bomber█∞┼

    Aftermarket Sun Roof, Spoiler and Heated Seats, BC4E Dead Pedal
    PERFORMANCE - ADCO Front and Rear Sway Bars, K&N FIPK Air Intake,
    XCal2 Tuned by DR
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    SOUND SYSTEM - Infinity Reference Speakers All Around, Infinity Reference 4 Channel 465W AMP, 2 10" Audiobahn Subs in Enclosed/ported box
    APPEARANCE - Tints w/Windshield Eyelid, SS Inserts, S55 Tail Light Treatment, Full Interior LED Upgrade w/Guages and Cluster, CMS Gods Head Conversion, Custom Floor Mats From CarMotorsports, satin pedals, self-built black and silver pinstriped interior trim and accents

    CURRENT PROJECTS - Doing what Ford should have done and gutting the interior...Stay tuned. It's a rather large project.

  8. #8
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    Quote Originally Posted by bolsen View Post
    Which one is better?
    The Marauder came with an H pipe. I prefer my X pipe. It's a matter of taste / sound.
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis




  9. #9
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    +1 on X pipe.

  10. #10
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    Which x-pipes are the best value?
    ┼∞█The Black Bomber█∞┼

    Aftermarket Sun Roof, Spoiler and Heated Seats, BC4E Dead Pedal
    PERFORMANCE - ADCO Front and Rear Sway Bars, K&N FIPK Air Intake,
    XCal2 Tuned by DR
    LIGHTS - Self-built HID projectors, True 3000K Osram Foglights
    SOUND SYSTEM - Infinity Reference Speakers All Around, Infinity Reference 4 Channel 465W AMP, 2 10" Audiobahn Subs in Enclosed/ported box
    APPEARANCE - Tints w/Windshield Eyelid, SS Inserts, S55 Tail Light Treatment, Full Interior LED Upgrade w/Guages and Cluster, CMS Gods Head Conversion, Custom Floor Mats From CarMotorsports, satin pedals, self-built black and silver pinstriped interior trim and accents

    CURRENT PROJECTS - Doing what Ford should have done and gutting the interior...Stay tuned. It's a rather large project.

  11. #11
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    Quote Originally Posted by bolsen View Post
    Which x-pipes are the best value?
    I'm running a Mac Pro-Chamber, which is supposed to provide the best of both X and H pipe performance characteristics.

    2003 300B DBP
    Build date: 6/19/03
    Number 7,792 of 7,838 - 326 of 328
    Proud member of the MM "BLUES" Bros.
    Purchased: 11/10/05
    Eaton swap by ImpalaSlayer 11-09-10

    Semper et in Aeternum, Mercurius.

    In Memory:
    2004 DTR
    Build Date 01/27/04
    Purchased 04/04/04
    Wrecked 10/19/05, R.I.P.



  12. #12
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    Quote Originally Posted by bolsen View Post
    Which x-pipes are the best value?
    I started this yesterday. It's a kooks true xpipe in stainless.

    http://www.mercurymarauder.net/forum...ad.php?t=79115



  13. #13
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    I installed a Bassani on my ride & it was a little bit pricey. But nothing but the best for my Rauder.

  14. #14
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    My MM is stock but on my mustangs I've had H pipes, X pipes and a prochamber at one point, which is kind of in between.

    H pipes IMO give a deeper more mellow sound
    X pipes IMO give a raspier more pissed off sound
    Prochamber is in between, and gives you one more thing to scrape on the ground when getting in parking lots.

    I have an X on the mach1 now, and if I were to do it again and had a choice, it would be an H, I prefer that sound. The marauder will stay an H.

    You will lose power and it will sound like an old chevy truck without any kind of pressure equalizer.
    Last edited by Fosters; 04-23-2012 at 03:59 PM.
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  15. #15
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    Technically an X makes more power. You can get one that's muffled (perforated X core)

    and this will be a third time: Don't do straight pipes you will loose power. --again just in case you missed it.
    2021 F150 XLT Super Crew short bed - no chrome! - 3.5 Ecoboost 400hp/500tq - 36 Gal tank (600 miles) - 4x4 FX4 Offroad + Max Tow - 3.55 Locker - 10 Speed - Pro Power 2kva - 24mpg @ 80 Ford is still the best.
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