Thread: exhaust fell apart, need opinions/suggestions

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  1. #1 exhaust fell apart, need opinions/suggestions 
    SE Level Member mngtp's Avatar
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    Last night the exhaust fell apart on our GP. It rusted/fell apart at the Y-pipe. So now there is no exhaust past the last hanger just before the Y-pipe. With no mufflers the exhaust is so loud and annoying.

    Its my understanding that the cat-back exhaust flows good. I like the sound of the stock exhaust, sure it could be a little louder but oh well.

    I need to fix this asap and money is a factor. I can get the exhaust from a junkyard for about $50-$70. That's the exhaust from the res flange all of the way back. Most of the exhaust looks good aside from the Y-pipe that rusted off.

    So Im looking for opinions:

    Do I replace the system from the res flange all of the back?

    or

    Do I just replace it just in front of the Y-pipe? If I go this route I would use a slightly large pipe and some clamp to sleeve the exhaust together. Would this hurt anything as far as flow/restrictions?

    Could I use the "sleeve" method to delete the U bend? Can I do anything to make the exhaust a little louder than stock but still sound good?

    If you have any suggestions/ideas, please share.

    Thanks in advance
    HIS: 1999 Pontiac Grand Prix Coupe GTP: 245,xxx miles and counting, 4" HD intake, 17" '06 Grand Prix GTP Rims
    HERS: 2005 Chevrolet Equinox LS: stock for now
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  2. #2 Re: exhaust fell apart, need opinions/suggestions 
    Killa Bee Scottydoggs's Avatar
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    you will need a welder to change the Y pipe, they run around 70 to 90 bucks on ebay.

    if you want for about $250 you can get a new cat back off ebay. it may only last 4 or 5 years but what you want for 250?

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  3. #3 Re: exhaust fell apart, need opinions/suggestions 
    GrandPrix Junkie ItHurtz's Avatar
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    http://www.mandrelexhaustsystems.com...ND-PRIX/Detail
    and
    perfect time to add your own tips and superturbo mufflers!
    2000 GTPT Sold-brandonhall10 built trans
    2009 Challenger SRT8
    http://www.grandprixforums.net/threa...uestion.....no
    Expert at being gay.
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  4. #4 Re: exhaust fell apart, need opinions/suggestions 
    Killa Bee Scottydoggs's Avatar
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    you forgot the 3 inch res for them fat pipes. if you go 3 inch lol

    that same site has a single 3 inch set up im thinking of.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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