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WTB: GMMG Exhaust, Corsa Tips

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  • WTB: GMMG Exhaust, Corsa Tips

    Looking for the complete catback, Corsa clone tips would be extra awesome!

  • #2
    http://www.madhammer.com/pages/mad_h...2-02_cama.html

    Here is somewhere to buy them brand new still. Love it on my car. As long as you have the acts still on the car, it will sound awesome. When you remove the cats, you'll want to add a bullet muffler, or another chambered type muffler that the system is made with, it mellows out the rasp with no cats.
    Jason Ebig
    Federal Firearms/Class 3 Dealer
    $20 Firearm Transfers
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    • #3
      Wow! Are you kidding me, how did I not know about this? Thanks a bunch! I have heard about the rasp, it'll be a concern for me and my ORY

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      • #4
        Originally posted by FLY1NLO View Post
        Wow! Are you kidding me, how did I not know about this? Thanks a bunch! I have heard about the rasp, it'll be a concern for me and my ORY
        No concern, just grab a 24" bullet muffler, or an extra muffle the same style as the madhammer exhaust, and it tones down the rasp great. Google GMMG rasp fix or GMMG bullet fix, and there is alot of info on LS1Tech about it, i love the way mine sounds with long tubes and ORY, with the added bullet, got mine for a great deal from newegg.com of all places.

        Jason
        Jason Ebig
        Federal Firearms/Class 3 Dealer
        $20 Firearm Transfers
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        • #5
          Haha Newegg?! You're just full of unique information aren't you

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          • #6
            Just FYI, I run a pair of Magnaflow 59559 cats on my car and the GMMG did not rasp when I had tips on it. At the time they ran ~$80 each but they may be more now. Believe it or not the tips play a huge role in rasp, take them off and it gets much worse.
            1994 Z28 - 2002 M3 - 2015 1.0T Mileage Accumulator

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            • #7
              Thanks for the tip (hah). To be honest, I have no idea what this rasp sounds like, and struggle to find a YouTube video that shows it.

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              • #8
                The GMMG will have a good aggressive sounding slight raspiness all the time. When done wrong its an obnoxious jackhammer like rasp.

                Mix of both
                1994 Z28 - 2002 M3 - 2015 1.0T Mileage Accumulator

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                • #9
                  Wow! Best video I've ever seen for this, that sounds horrible.

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                  • #10
                    Welp, just ordered from Mad Hammer! Great they have an option to not get tips, since I'll be putting Corsa Clones on.

                    Regarding the muffler, after reading up a little, sounds like the Powerstick is the best way to go for rasp reduction?
                    http://www.classicchambered.com/classic/products.html

                    Couldn't find many reviews in way of Dynomax, which I wouldn't mind getting as I have a Jegs giftcard waiting to be used
                    http://www.jegs.com/i/Dynomax/289/24219/10002/-1

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                    • #11
                      Y pipe merge quality plays a big role as well. A good merge will rasp less. There are really a ton of options to cut down on it.
                      1994 Z28 - 2002 M3 - 2015 1.0T Mileage Accumulator

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                      • #12
                        Ok, so I should:
                        1. Weld a bullet in my i pipe
                        2. Weld a flowmaster merge (or equivalent) into my ORY.

                        Yes? Figure I mine as well get the cutting and welding all done before installing

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                        • #13
                          Originally posted by FLY1NLO View Post
                          Welp, just ordered from Mad Hammer! Great they have an option to not get tips, since I'll be putting Corsa Clones on.

                          Regarding the muffler, after reading up a little, sounds like the Powerstick is the best way to go for rasp reduction?
                          http://www.classicchambered.com/classic/products.html

                          Couldn't find many reviews in way of Dynomax, which I wouldn't mind getting as I have a Jegs giftcard waiting to be used
                          http://www.jegs.com/i/Dynomax/289/24219/10002/-1
                          That is the exact bullet muffler i went with on my setup, and it helped alot. I mainly did it because of cost, as the powerstick was twice the price, and i had paypal funds that needed to be used, and newegg took them.
                          Jason Ebig
                          Federal Firearms/Class 3 Dealer
                          $20 Firearm Transfers
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                          • #14
                            Originally posted by FLY1NLO View Post
                            Ok, so I should:
                            1. Weld a bullet in my i pipe
                            2. Weld a flowmaster merge (or equivalent) into my ORY.

                            Yes? Figure I mine as well get the cutting and welding all done before installing
                            I would say one or the other with just headers, both with a cam.
                            1994 Z28 - 2002 M3 - 2015 1.0T Mileage Accumulator

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                            • #15


                              Thats my car when I had it, had some high flow cats and a Flowmaster 4" merge on it. No problems with rasp but I would try and avoid the cats if I had to do it again. Start without a resonator in the I-pipe, then if it's needed throw one in there, its fairly simple to do after the fact.

                              2011 Mustang GT
                              20" Satin Black AMRs with 305/35 & 275/35 MT Street Radials, Saleen Grille, CS Lower Valance, Roush Axleback, GT500 Spoiler, resonator delete

                              In Progress: Brembo 6-piston brake upgrade


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