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Exhaust?

This is a discussion on Exhaust? within the External Engine forums, part of the LSx Technical Help Section category; Ok i went to my local muffler shop to get my exhuast done and the guy said all i need ...

  1. #1
    The Silver Bullet LS1_ws6's Avatar
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    Exhaust?

    Ok i went to my local muffler shop to get my exhuast done and the guy said all i need is a muffler. but i wanted the whole exhuast, cats back to the tips but he said it wont be nesasary to put on all that pipeing because is not restrictive just the muffler is. Is this true shoul i just get the muffler or everything?

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    Firebird Encyclopedia 9T8W66's Avatar
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    The stock piping is 2.75" into the muffler and 2.5" out.
    All aftermarket catbacks are 3" or bigger, mine is 3.5" from the Y to the bumper.

    Get my point
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    The Silver Bullet LS1_ws6's Avatar
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    so would there be a big increase in hp compared to the stock or is it not worth it. he is chargeing me 250 for labor muffler and maybe some polished tip or chrome and pipeing to cover the space from the long muffler. is this a good deal or not?

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    I don't ever trust exhaust shops. I have been to a number of exhaust shops in the past few days trying to find someone who can make me a y-pipe with a flowmaster merge and they tell me it can't be done.

    Screw the exhaust shop guy. What do you want out of your exhaust? If he can't do what you want then go somewere else. You might be better off ordering a bolt on kit and doing it yourself if you feel comfortable doing it.

    And $250 seems like a lot if you are suppling the muffler there isnt a whole lot of piping back there. I would go to some more exhaust shops to see what kind of prices they give you.
    Last edited by matt1289; 07-02-2009 at 06:57 AM.

  5. #5
    The Silver Bullet LS1_ws6's Avatar
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    Quote Originally Posted by matt1289 View Post
    I don't ever trust exhaust shops. I have been to a number of exhaust shops in the past few days trying to find someone who can make me a y-pipe with a flowmaster merge and they tell me it can't be done.

    Screw the exhaust shop guy. What do you want out of your exhaust? If he can't do what you want then go somewere else. You might be better off ordering a bolt on kit and doing it yourself if you feel comfortable doing it.

    And $250 seems like a lot if you are suppling the muffler there isnt a whole lot of piping back there. I would go to some more exhaust shops to see what kind of prices they give you.
    which brands are the bolt on kits and wont it leak i thought welding it would be the best way to do it. The one muffler shop i went to is the best shop in my area and now the only one.

  6. #6
    Firebird Encyclopedia 9T8W66's Avatar
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    I purchased my frst catback back in `00 and had it hung and welded up at a local mufflerman for $100.
    My current Mufflex system I did myself, hardest part was removing the old rusty exhaust,
    Took a couple days of driving it and making slight adjustments to get it perfect, but well worth it IMO.

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    I like band claps but welding is the best way to keep it from leaking. There are a large number of cat-backs out there. Go to ls1sounds there a list of them and some sound clips of a lot of set ups.

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    GMMG

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    The Silver Bullet LS1_ws6's Avatar
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    how is those mufflex working for you do you like those 9T8W66. i've gone to LS1sound and liked mufflex and GMMG. but i havent found anyone who sells GMMG

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    Quote Originally Posted by LS1_ws6 View Post
    how is those mufflex working for you do you like those 9T8W66. i've gone to LS1sound and liked mufflex and GMMG. but i havent found anyone who sells GMMG
    only 1 place to get it. kinda high priced but well well worth it

    http://gmmginc.net/Exhaust/

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    Firebird Encyclopedia 9T8W66's Avatar
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    Quote Originally Posted by LS1_ws6 View Post
    how is those mufflex working for you do you like those 9T8W66. i've gone to LS1sound and liked mufflex and GMMG. but i havent found anyone who sells GMMG
    Love my Mufflex, I have the 3.5" SOTL with the tucked up turndown.
    I have the kit with the Flowmaster 30 series deltaflow race muffler.
    I get comments all the time of how it sounds like the car has headers (Deep throaty rumble) but infact the rest of the exhaust is original.

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    The Silver Bullet LS1_ws6's Avatar
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    Quote Originally Posted by 9T8W66 View Post
    Love my Mufflex, I have the 3.5" SOTL with the tucked up turndown.
    I have the kit with the Flowmaster 30 series deltaflow race muffler.
    I get comments all the time of how it sounds like the car has headers (Deep throaty rumble) but infact the rest of the exhaust is original.
    was it really pricey

  13. #13
    The Silver Bullet LS1_ws6's Avatar
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    what is the closes muffler tone to GMMG?

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    Firebird Encyclopedia 9T8W66's Avatar
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    Quote Originally Posted by LS1_ws6 View Post
    was it really pricey
    # 98352C
    http://www.mufflex-performance.com/fbody_6.html

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    The Silver Bullet LS1_ws6's Avatar
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    Thanks alot for the help guys.

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    Senior Member INMY01TA's Avatar
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    I'd go long tube headers, off road y pipe, and an electric cutout. Cat back is just a waste of money imo.

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    Quote Originally Posted by INMY01TA View Post
    I'd go long tube headers, off road y pipe, and an electric cutout. Cat back is just a waste of money imo.
    The only problem is that seems to attract more cops. Plus unless you got some work done to your motor imo cut outs sound like

  18. #18
    Senior Member INMY01TA's Avatar
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    Quote Originally Posted by Dr.Crash View Post
    The only problem is that seems to attract more cops.
    Hence why I said "electric" cutout. Quiet or loud at the flick of a switch.

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    TJEA Retirement Home Dr.Crash's Avatar
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    Quote Originally Posted by INMY01TA View Post
    Hence why I said "electric" cutout. Quiet or loud at the flick of a switch.

    True true true. But..........

    Quote Originally Posted by Dr.Crash View Post
    The only problem is that seems to attract more cops. Plus unless you got some work done to your motor imo cut outs sound like

  20. #20
    The Silver Bullet LS1_ws6's Avatar
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    Well i would like to put headers on it but theres no mechanic that would even think about installing them and i dont have good enough tools

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