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Borla Back Cat Systems

This is a discussion on Borla Back Cat Systems within the External Engine forums, part of the LSx Technical Help Section category; I have a 1999 Trans Am. I am looking at changing the back cat portion of my exhaust with a ...

  1. #1
    Junior Member tznutts's Avatar
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    Midnight Blue
    1999 Trans Am M6

    Borla Back Cat Systems

    I have a 1999 Trans Am. I am looking at changing the back cat portion of my exhaust with a Split Rear Exit Borla back cat, Part Number #14780.

    Current Mods are:
    Granatelli 350200 Cold Air Intake Lid
    Cut out the bottom of my air box, K and N filter
    Taylor 8mm wires
    cooling bypass line on my TB

    I am about to polish the TB and cut back the EGR.

    My question is, is the cost vs. power gain worth it? It will cost me around $900 for this system. Should I invest in another direction? Is there a better system with less cost? I really like the tuned sound that comes from these systems and my wife drives the car on nice days and I want the option of being able to quiet it down with the block off plates.

    Please advise...

    Thanks!

  2. #2
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    Silver
    2002 WS6 TA

    It is the best sounding in my opinion. My wife loves the sound. It is all stainless as you know. I think you might pick up 10-15HPwith it. If you want HP 900.00 is better spent elsewhere.

  3. #3
    Junior Member tznutts's Avatar
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    Midnight Blue
    1999 Trans Am M6

    M6

    What is this? M6?

  4. #4
    Senior Member Zboner's Avatar
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    buy a used one, i picked mine up for 400 bucks shipped to my house

  5. #5
    SOM WS6 fbird777's Avatar
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    Sunset Orange Metallic
    2002 Pontiac Trans Am WS6

    I have a Borla Catback and I am really enjoying it, it isn't obnoxious but it sounds nice WOT.

  6. #6
    Senior Member Zboner's Avatar
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    here is a sound clip of my borla when i had my Z28



  7. #7
    Member scooley's Avatar
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    I put one on my 01 TA WS6, never regretted that decision. It's a real head turner.

  8. #8
    99 LSX Trans Am transamgreen's Avatar
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    1999-TransAm LSX

    Thumbs up

    I agree, it is a sweat system. It was the first thing that I did when I bought my 01 new and it added 10 to 15.

  9. #9
    Senior Member Tyler_LS1's Avatar
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    1999 Camaro SS-M6 #1775

    I saw this on another site and it looks like the Magnaflow is the best bang for the buck at only $400 and its Stainless Steel (complete catback)
    JMO dont get me wrong the Borla is a nice system just pricey when new

    FAST LS1
    12-06-2003, 03:38 PM

    The results in HP order:
    1.Flowtech Warlock (open) 374.2 hp/ 333.1 tq
    2.Bassani Real Street 373.7 hp/ 333.8 tq
    3.Hooker Maxflow 373.5 hp/ 333 tq
    4.Borla XS 373.3 hp/ 332.6 tq
    5.Magnaflow 372.8 / 332.5 tq
    6.MAC 372.3 hp / 331.5 tq
    7.Flowtech Afterburner 372.3 hp/ 330.1 tq
    8.Hooker Aerochamber 372.1 hp/ 330.4 tq
    9.Bassani 372 hp/ 333.5 tq
    10.Spintech 371.6 hp/ 332.2 tq
    11.Edelbrock Performer RPM 370.9 hp / 331.3 tq
    12.Borla XR1 370 hp/ 334 tq
    13.Flowtech Terminator 369.5 hp / 331.3 tq
    14.Dynomax Ultra Flo 369.4 / 333.2 tq
    15.Flowmaster 369.4 hp / 331.8 tq
    16.Flowtech Warlock 366.3 hp / 325.3 tq
    17.No muffs 365.2 hp / 330.1 tq

    Sound Off in Quietest to Loudest (Decibels):

    1.Borla XS, 80db at idle, 90db at 2,000 rpm, 110db at WOT.
    2.Hooker Maxflow, 80db at idle, 90db at 2,000 rpm, 120db at WOT.
    3.Magnaflow, 82db at idle, 91 at 2,000 rpm, 114db at WOT.
    4.Flowmaster, 82db at idle, 93 at 2,000 rpm, 115db at WOT.
    5.Flowtech Warlock, 83db at idle, 92 at 2,000 rpm, 112db at WOT.
    6.Dynomax UltraFlo, 83db at idle, 94 at 2,000 rpm, 113db at WOT.
    7.Borla XR1, 83db at idle, 96db at 2,000 rpm, 118db at WOT.
    8.Bassani Street, 83db at idle, 96db at 2,000 rpm, 120db at WOT.
    9.Edelbrock RPM, 84db at idle, 93db at 2,000 rpm, 118db at WOT.
    10.Bassani Real Street, 84db at idle, 96db at 2,000 rpm, MAX. (120+db).
    11.Flowtech Afterburner, 86db at idle, 94db at 2,000 rpm, 115db at WOT.
    12.Flowtech Terminator, 86db at idle, 94db at 2,000 rpm, 119db at WOT.
    13.Hooker Aerochamber, 87db at idle, 94db at 2,000 rpm, 114db at WOT.
    14.SpinTech, 87db at idle, 97db at 2,000 rpm, 116db at WOT.
    15.MAC, 87db at idle, 98db at 2,000 rpm, 119db at WOT.
    16.No Muffler, 91db at idle, 103db at 2,000 rpm, MAX. (120+db).

  10. #10
    Rice Killa JwMonE99's Avatar
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    Black With T-Tops
    96 Z28 M6

    Borla is the best sounding exhaust IMHO, if you can afford it would go for it hands down.

  11. #11
    Senior Member Zboner's Avatar
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    Quote Originally Posted by Tyler_LS1 View Post
    I saw this on another site and it looks like the Magnaflow is the best bang for the buck at only $400 and its Stainless Steel (complete catback)
    JMO dont get me wrong the Borla is a nice system just pricey when new

    FAST LS1
    12-06-2003, 03:38 PM

    The results in HP order:
    1.Flowtech Warlock (open) 374.2 hp/ 333.1 tq
    2.Bassani Real Street 373.7 hp/ 333.8 tq
    3.Hooker Maxflow 373.5 hp/ 333 tq
    4.Borla XS 373.3 hp/ 332.6 tq
    5.Magnaflow 372.8 / 332.5 tq
    6.MAC 372.3 hp / 331.5 tq
    7.Flowtech Afterburner 372.3 hp/ 330.1 tq
    8.Hooker Aerochamber 372.1 hp/ 330.4 tq
    9.Bassani 372 hp/ 333.5 tq
    10.Spintech 371.6 hp/ 332.2 tq
    11.Edelbrock Performer RPM 370.9 hp / 331.3 tq
    12.Borla XR1 370 hp/ 334 tq
    13.Flowtech Terminator 369.5 hp / 331.3 tq
    14.Dynomax Ultra Flo 369.4 / 333.2 tq
    15.Flowmaster 369.4 hp / 331.8 tq
    16.Flowtech Warlock 366.3 hp / 325.3 tq
    17.No muffs 365.2 hp / 330.1 tq

    Sound Off in Quietest to Loudest (Decibels):

    1.Borla XS, 80db at idle, 90db at 2,000 rpm, 110db at WOT.
    2.Hooker Maxflow, 80db at idle, 90db at 2,000 rpm, 120db at WOT.
    3.Magnaflow, 82db at idle, 91 at 2,000 rpm, 114db at WOT.
    4.Flowmaster, 82db at idle, 93 at 2,000 rpm, 115db at WOT.
    5.Flowtech Warlock, 83db at idle, 92 at 2,000 rpm, 112db at WOT.
    6.Dynomax UltraFlo, 83db at idle, 94 at 2,000 rpm, 113db at WOT.
    7.Borla XR1, 83db at idle, 96db at 2,000 rpm, 118db at WOT.
    8.Bassani Street, 83db at idle, 96db at 2,000 rpm, 120db at WOT.
    9.Edelbrock RPM, 84db at idle, 93db at 2,000 rpm, 118db at WOT.
    10.Bassani Real Street, 84db at idle, 96db at 2,000 rpm, MAX. (120+db).
    11.Flowtech Afterburner, 86db at idle, 94db at 2,000 rpm, 115db at WOT.
    12.Flowtech Terminator, 86db at idle, 94db at 2,000 rpm, 119db at WOT.
    13.Hooker Aerochamber, 87db at idle, 94db at 2,000 rpm, 114db at WOT.
    14.SpinTech, 87db at idle, 97db at 2,000 rpm, 116db at WOT.
    15.MAC, 87db at idle, 98db at 2,000 rpm, 119db at WOT.
    16.No Muffler, 91db at idle, 103db at 2,000 rpm, MAX. (120+db).

    what where did you get this HP thingy cause those ratings are totally off for a stock LS1 car. should be about 300-310

  12. #12
    Junior Member Hamrhead's Avatar
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    2000 Camaro

    I had a Borla when my car was mostly stock and I loved the sound. However when I eventually got long tubes the sound was a little to raspy for my liking. Still a very nice system though and well built!

  13. #13
    Senior Member Tyler_LS1's Avatar
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    1999 Camaro SS-M6 #1775

    When i saw the numbers i was assuming it was a H/C LS1

    Il try and find the place again

  14. #14
    CrapMaster samson_420's Avatar
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    I really like the sound of the Borla, but the price is retarded. I also don't like the dual tips too much. So I went with the MagnaFlow, I got it for 375 Bucks shipped over night on eGay. I say that is a very good price and it sounds good.

  15. #15
    2 SS's are better than 1 Jays00ss's Avatar
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    NBM / Silver
    00 SS / 71 SS Elcamino

    Try to find a used Borla. I bought mine on the local craigs list for $300 it only had 5000 miles on it and looked like new. Shop around a little. I love mine and its fun to play around with the different sized plates.
    2000 SS Camaro Heads, Large cam, Fast 90, 9"w/430's and locker, yada yada yada... you get the picture

    1971 SS ElCamino 402 Big Block 550HP

    2006 Silverado 2500HD 496 cubic inches of pure muscle

  16. #16
    Member
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    Silver
    2002 WS6 TA

    "I had a Borla when my car was mostly stock and I loved the sound. However when I eventually got long tubes the sound was a little to raspy for my liking. Still a very nice system though and well built!"

    +2 I just put on Kooks LT and ORY. Now I just bought a Reg Y and cats. I lost the borla sound I liked so much.

  17. #17
    Member ls1speedster's Avatar
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    black
    2002 trans am

    Quote Originally Posted by tznutts View Post
    I have a 1999 Trans Am. I am looking at changing the back cat portion of my exhaust with a Split Rear Exit Borla back cat, Part Number #14780.

    Current Mods are:
    Granatelli 350200 Cold Air Intake Lid
    Cut out the bottom of my air box, K and N filter
    Taylor 8mm wires
    cooling bypass line on my TB

    I am about to polish the TB and cut back the EGR.

    My question is, is the cost vs. power gain worth it? It will cost me around $900 for this system. Should I invest in another direction? Is there a better system with less cost? I really like the tuned sound that comes from these systems and my wife drives the car on nice days and I want the option of being able to quiet it down with the block off plates.

    Please advise...

    Thanks!

    what do u mean by cutting the bottom of the air box...
    havnt heard of it..but am open to knew hp gains...

    or if any else knows..
    more info please..

  18. #18
    Junior Member tznutts's Avatar
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    Midnight Blue
    1999 Trans Am M6


  19. #19
    Senior Member Zboner's Avatar
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    Quote Originally Posted by ls1speedster View Post
    what do u mean by cutting the bottom of the air box...
    havnt heard of it..but am open to knew hp gains...

    or if any else knows..
    more info please..
    its called free ram air

  20. #20
    Senior Member INMY01TA's Avatar
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    2001 Trans Am (sold)

    Love my Borla. From a hp stand point, not woth $900. If you like the tips and sound adjustibility then it is worth it.

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