Thread: Full glasspack/steelpack exhaust?

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  1. #1 Full glasspack/steelpack exhaust? 
    GTX Level Member DanGTP's Avatar
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    I'm considering going with a glass/steel-packed muffler and res setup. I got an opportunity to test a bullet steelpack muffler from a friend's mustang for a few days and liked the sound of it (bolted on to the DP, then dumped under the back seat) but want to keep my hearing. So, what if I used something like that as a res and then again as mufflers?

    Any experience with similar setups or suggestions?
    ~
    '97 GTP: 9.5:1 Diamonds, P&P Everything, XP, SSIC, GenV, Shiny Headers, 3.29's, HPTuners, E85
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  2. #2 Re: Full glasspack/steelpack exhaust? 
    GT Level Member YoungGTP's Avatar
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    i would like to know the same cause i wanna do glasspacks
    -98 GTP Thunderstorm
    Cai, 3.5 press on pulley, NGK TR6's, 3" to 2.5" exhaust, thrush glasspacks, drilled 180 t-stat soon-overkill pcm, fully ported sc, N* TB, and LQ4 MAF, Future- Full I/C, XP cam, s&s headers
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  3. #3 Re: Full glasspack/steelpack exhaust? 
    I live here. GTPJOE90's Avatar
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    DO IT!! i heard 1 it sounded nice it had headers and just a sright pipe with 2 glass packs it was nice!
    hogan 3inch DP u bend delete ,180*tstat, autolite 104s, LED interior, 4" FWI, 2000watt system, bullitt rims, zzp pistons, pems, alt rewire, thrush muffs, 3.4 zzp mps, transgo shift kit, triple edge performance trans. autometer triple pod :SOON: urlosn HPT PCM tune, HEADERS, 1.9's
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  4. #4 Re: Full glasspack/steelpack exhaust? 
    GT Level Member YoungGTP's Avatar
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    thats what i plan on with out the headers yet. right now its straight pipes and im getting bored
    -98 GTP Thunderstorm
    Cai, 3.5 press on pulley, NGK TR6's, 3" to 2.5" exhaust, thrush glasspacks, drilled 180 t-stat soon-overkill pcm, fully ported sc, N* TB, and LQ4 MAF, Future- Full I/C, XP cam, s&s headers
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  5. #5 Re: Full glasspack/steelpack exhaust? 
    GTX Level Member DanGTP's Avatar
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    As soon as I get the opportunity to get everything together for the setup, I'll do it. Any brand suggestions? I'm thinking of the summit glasspacks. They're cheap.
    ~
    '97 GTP: 9.5:1 Diamonds, P&P Everything, XP, SSIC, GenV, Shiny Headers, 3.29's, HPTuners, E85
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  6. #6 Re: Full glasspack/steelpack exhaust? 
    GT Level Member YoungGTP's Avatar
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    either that or go on ebay and get the ones on there i forgot what they were but they were like 20 plus shipping (could be crappy glass packs) but you never know
    -98 GTP Thunderstorm
    Cai, 3.5 press on pulley, NGK TR6's, 3" to 2.5" exhaust, thrush glasspacks, drilled 180 t-stat soon-overkill pcm, fully ported sc, N* TB, and LQ4 MAF, Future- Full I/C, XP cam, s&s headers
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  7. #7 Re: Full glasspack/steelpack exhaust? 
    DUI BABY Bio248's Avatar
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    dont take off your mufflers. just get a glasspack to go in place of the resonator.

    find the biggest one you can (length).
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  8. #8 Re: Full glasspack/steelpack exhaust? 
    GT Level Member YoungGTP's Avatar
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    how would a glasspack res and borla muffs work? thats my new idea
    -98 GTP Thunderstorm
    Cai, 3.5 press on pulley, NGK TR6's, 3" to 2.5" exhaust, thrush glasspacks, drilled 180 t-stat soon-overkill pcm, fully ported sc, N* TB, and LQ4 MAF, Future- Full I/C, XP cam, s&s headers
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  9. #9 Re: Full glasspack/steelpack exhaust? 
    DUI BABY Bio248's Avatar
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    would sound good. borla's are the best sounding on these cars besides stock.
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  10. #10 Re: Full glasspack/steelpack exhaust? 
    GTX Level Member DanGTP's Avatar
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    You don't think a full glasspack setup will sound good, Bio? There's a slight problem with my stock exhaust setup, though. I had this bright idea a few years ago that drilling a few holes through the casing of the stock mufflers would give me a little bit more volume and wouldn't cost me the money of new mufflers (very stupid idea, BTW). The downside to that is, now, with my cam, it doesn't just sound louder. When I accelerate, it is obvious that I've drilled those holes and sounds like I have an crappy exhaust leak (idle sounds nice, though). I don't want to repair them or replace them with other stock mufflers because I do want more volume out of my exhaust system.

    How big of a difference is there, actually, with just replacing the stock res with a glasspack?
    ~
    '97 GTP: 9.5:1 Diamonds, P&P Everything, XP, SSIC, GenV, Shiny Headers, 3.29's, HPTuners, E85
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  11. #11 Re: Full glasspack/steelpack exhaust? 
    DUI BABY Bio248's Avatar
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    no. straight exhaust on these cars are garbage. you need some kind of muffler for sound definition.

    a glasspack will flow better than the stock resonator and it will also give a little more growl to it and still keep the rasp at bay.
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  12. #12 Re: Full glasspack/steelpack exhaust? 
    GT Level Member YoungGTP's Avatar
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    mine does sound to bad, but when it starts to rasp it really rasps.
    -98 GTP Thunderstorm
    Cai, 3.5 press on pulley, NGK TR6's, 3" to 2.5" exhaust, thrush glasspacks, drilled 180 t-stat soon-overkill pcm, fully ported sc, N* TB, and LQ4 MAF, Future- Full I/C, XP cam, s&s headers
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  13. #13 Re: Full glasspack/steelpack exhaust? 
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    I have glasspacks in place of the mufflers...YouTube - 99 GTP with dual Thrush glasspacks. If you dont have the res,your gonna have more rasp, and its gonna be hella loud depending on what size g-packs you get. Mine above has some rasp and I still have the res. in place. Im curious how its gonna sound after Sat. when I put my 2.5 dp on and do a U-bend delete. Ill try and get a sound clip or 2.
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  14. #14 Re: Full glasspack/steelpack exhaust? 
    GTX Level Member DanGTP's Avatar
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    That sounds pretty good. I think that'll be the route I go. I'm looking at the Summit brand stuff just because it's a bit cheaper and have heard good things about some of Summit's other mufflers. I'm thinking 3" for the res and a pair of 2.5" for the mufflers. Each of those is a size larger than the piping, but I've heard that larger gives a deeper tone. Should I stick with the factory sizes or will the larger ones work like I'm wanting?
    ~
    '97 GTP: 9.5:1 Diamonds, P&P Everything, XP, SSIC, GenV, Shiny Headers, 3.29's, HPTuners, E85
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  15. #15 Re: Full glasspack/steelpack exhaust? 
    resident snitch gtpinsc's Avatar
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    heres mine...catback flowmaster with dual rolled tips with u bend delete

    02 GTP with mods 05 GP for DD
    Quote Originally Posted by SuperSport View Post
    The majority of the people here are potheads who want to buy good condition parts at junkyard prices.
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  16. #16 Re: Full glasspack/steelpack exhaust? 
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    Quote Originally Posted by DanGTP View Post
    That sounds pretty good. I think that'll be the route I go. I'm looking at the Summit brand stuff just because it's a bit cheaper and have heard good things about some of Summit's other mufflers. I'm thinking 3" for the res and a pair of 2.5" for the mufflers. Each of those is a size larger than the piping, but I've heard that larger gives a deeper tone. Should I stick with the factory sizes or will the larger ones work like I'm wanting?
    The ones I ran were 2.5 inch, then I heated the end of the glasspack and put my stock tips back on it. Personally id do the same size through-out just to keep the exhaust flow smooth. Its like a lot of people ive seen that run a 3in downpipe into a stock exhaust. Your gonna have some backpressure due to the larger amount of air going from the downpipe into the smaller size pipe.
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