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Hi! need help for 2015-2017 mustang gT exhaust.

Discussion in 'V8 5.0L Engine / Mods: Bolt-ons, Exhaust, Tuning' started by oloap24, Jun 26, 2020.

  1. oloap24

    oloap24 Active Member

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    upload_2020-6-25_22-57-31.png
    Has anyone tried this with roush A/B? i bought my car with an aftermarker catback already but i want to change to roush A/B. The borla midpipes are 2.5 i dont know if itll fit.. Thanks!
     
  2. Bahndvr

    Bahndvr Roushcharged

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    Everyone says that the Roush A/B is loud especially without the suite case. I don't know which aftermarket system you have on it now?
     
  3. OP
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    oloap24

    oloap24 Active Member

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    Flowmaster american thunder. Im not sure if it fits. American muscle said yes but lethal performance said no. But its 2.5"
     
  4. Powerbandnetics

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    I have both Roush A/B back and Borla cat back in my garage. Will compare them side by side for you tomorrow.
     
  5. Powerbandnetics

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    They are both 2.5” set up for the GT.
     
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  6. OP
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    oloap24

    oloap24 Active Member

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    So it means i can combine it sir?
     
  7. Powerbandnetics

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    Well, Roush will fit on the Borla mid-pipe perfectly (as shown) but it might have to be tweak a little to fit on your car. Meaning it won’t fit on the car perfectly. From the picture Roush is a little bit taller than the Borla But has the same angle. 1DD8C597-191E-4329-A75D-D4B9D31E3AE3.jpeg B033F18D-4BFF-4756-A923-58E99EF942CC.jpeg
     
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  8. OP
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    oloap24

    oloap24 Active Member

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    Sir, i really appreciate that you took some photos! So do you think it'll be better to just return the axleback and purchase the whole catback istead of just getting the borla mid pipes. Thank you so much!
     
  9. Powerbandnetics

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    This is all up to you, Depends on how loud you want to be and what your financial situation is. If it was up to me I would start with the intermediate and mid pipe first, keep the Roush A/B and try to see if it would fit without modifications. Installation is straightforward/easy and could be done within an hour in your garage/driveway. I have a lift, so I swap my set up a few times a year :). As for you, Borla axleback Could be acquired down the road as an option.

    If you like it loud, you would be happy with Roush.
    Borla atak would be your second choice.
    I am running 3” catback borla atak currently :)
     
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  10. OP
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    oloap24

    oloap24 Active Member

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    But i dont have my stock intermediate pipes anymore. Im kinda worried that if i get that borla pipes it wouldnt fit like it used to be.
     
  11. AZ18yote

    AZ18yote Well-Known Member

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    Consider replacing full catback with what you want instead of piecing together. Guaranteed fitment and can target what sound you are looking for.
     
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  12. OP
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    oloap24

    oloap24 Active Member

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    Thank you sir! Does getting 2.5" or 3" catback have a huge difference?
     
  13. AZ18yote

    AZ18yote Well-Known Member

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    If ever considering going with a supercharger definitely go 3". But even if staying NA I have never kept the smaller diameter.
     
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  14. Joe 5.0

    Joe 5.0 Well-Known Member

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    OP, I have the Borla Sport catback midpipes with Roush Axleback mufflers installed on my 2015 Mustang. It looks like that combo will work.

    The exhaust tone is incredible in my opinion (if you like raspy exhaust). I've gotten nothing but compliments. However, it's pretty loud and the drone sucks, lol.
     
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  15. AZ18yote

    AZ18yote Well-Known Member

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    Drone can be an issue, OP keep that in mind when planning your exhaust. But you can have rowdy and loud if that's what you are after without drone. Look at options like AWE Touring or Corsa Xtreme/Sport (if going long tubes Sport over Xtreme). These are just examples of options on the upper end of volume but that keep drone away.
     
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