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Best Cat-Back System?

This is a discussion on Best Cat-Back System? within the External Engine forums, part of the LSx Technical Help Section category; Borla makes an adjustable system the has a interchangable plate with different size holes in it. Exhaust bypasses the muffler ...

  1. #41
    Madeche Vision...soon The Scientist's Avatar
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    NBM
    '98 Ram Air Formula

    Borla makes an adjustable system the has a interchangable plate with different size holes in it. Exhaust bypasses the muffler through this hole. Thus, the larger the hole the more bypass the louder the exhuast. Block it off completely (capping it off) with a plate with no hole forces all of the exhaust through the muffler making it relatively quiet in comparison.
    If you have an M6 I would deffinately recommend Corsa because there will be no resonance/drone while cruising on the interstate/highway but loud as hell when you open it up.

  2. #42
    Junior Member glvr01's Avatar
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    maroon
    2000 Camaro

    Here's a question for all!!!!

    I just had LT headers put on and OFY. Before the headers were put on I had a custom exhaust system put on. I have no cats with a flow-master muffler sounds like ass since I put the headers and OFY on. I am looking for just a muffler to replace the flowmaster. What do you guys think. Price really isn't that big of an issue. Magnaflow or what???? give me some ideas thanks guys!!!!

  3. #43
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    2001 Trans AM Conv

    I just ordered the Magnaflow cat back today. $440 including shipping. I really wanted Borla's (my dad has them on his 2004 Vette vert), but the price dif was almost double. Decent price? I hope I'm satisfied with it.

  4. #44
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    2001 Trans AM Conv

    That's for the info The Scientist. I'm not sure my dad's Borla's have the cap? I have an A4. Price was nice on Magnaflows so I'm going to try them for now..

  5. #45
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    silver
    2000 ws6 trans am

    I Have The Corsa It Is Superior Quality With Awsome Sound And With No Interior Droan. It May Cost Alittle More But It Is First Class.

  6. #46
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    Hey Scientist, I have a corsa too and love it by the way (except for the over axel rattle). Are you running stock manifolds with no cats. My Cats died and I want to get rid of them but I have heard people say the corsa doesn't sound good without cats. Curious about your setup and if you have any sound clips. Any info would be appreciated!

  7. #47
    Madeche Vision...soon The Scientist's Avatar
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    '98 Ram Air Formula

    z28rktec, I have kooks 1 7/8" "race" long tubes with kooks ory. It sounds great but as I stated before in this tread or another, it pops in the middle of the rpm range when at mid-throttle. In this respect, the corsa has one of the negative aspects of open exhuast because in essence it is nothing but a straight pipe. I am pretty sure adding high flow cats would cure that problem. I do not have any sound clips and even if I did it would not do it justice. If you have a 2000 or newer then I have the thing for you. I have (willing to sale) a Bassani stainless steel ory pipe that bolts to the 2000-up exhaust manifold. I had it on with a flowmaster and it made quite a difference in sound and modest in hp. Let me know if you are interested or anyone else for that matter..

  8. #48
    Member TwistedSS's Avatar
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    Arctic White
    2001 Camaro SS

    Magnaflow FTW

    /Thread lol

  9. #49
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    I put the Magnaflow on a few days ago. Very impressed so far. Sounds great and no restriction!

  10. #50
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    white
    98 SS

    I have the SLP 2OTL (the LT1 SS upgrade pre-98) that had been retrofitted by SLP to fit 98's and up. I also have an electric cutout with LT's and a medium cam. When the cutout is closed, it is nice and mellow unless you WOT it. WIth it open, the car is obnoxiously loud and gurgly- which is the way I have it most of the time. My advice is to use the LS1 sounds page. It helped me a great deal b4 choosing to go w/ LT's and a cam. P.S. once you hear a LS1 with a cam and LT's thru a cutout, you will want yours that way very bad.

  11. #51
    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by beanie
    P.S. once you hear a LS1 with a cam and LT's thru a cutout, you will want yours that way very bad.
    I had it that way for a while.
    Hated it. TOO damn loud.

    I went with Kooks 1 7/8" headers and true duals with Magnaflow mufflers. Still loud, but has a great sound.
    2008 Trailblazer SS
    Yank PTB3600, Kooks 1 7/8" LT's, 4" intake, E-fans, Magnaflow, Sonnax kit, tranny cooler, tune.
    Lowered, HID's, tinted.

    1999 Pontiac Trans Am WS.6 #1747 SOLD
    531.1 RWHP 481.3 FT/Pounds all motor.

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