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post #1 of 17 (permalink) Old 04-18-2013, 12:51 AM Thread Starter
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Gmpp to zzp

So my car originally came with full gmpp exhaust setup. I'm thinking about switching it out with a zzp header and catback. I heard zzp would flow much better, is this true? And will it bolt up to the muffler from the gmpp?

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post #2 of 17 (permalink) Old 04-18-2013, 01:00 AM
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I think you're wasting your money if you already have a full Gmpp. Gm made those parts for performance. I'd say your golden


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post #3 of 17 (permalink) Old 04-18-2013, 01:00 AM
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Not sure about the exhaust n header but I know I have the tsudo cat back and bout to put a zzp downpipe on but the header I hear a lot of people tell me to get my header from badmab I guess there header build is really good with performance
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post #4 of 17 (permalink) Old 04-18-2013, 09:06 AM
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Didn't the gmpp exhaust just consist of a catback and not the header/dp?


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post #5 of 17 (permalink) Old 04-18-2013, 09:42 AM
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last i heard you are correct there blackbalts, and dont get rid of that gmpp!! lol if you do im sure theres people here that will buy

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post #6 of 17 (permalink) Old 04-18-2013, 05:54 PM
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The downpipe and header are probably holding you back. catback is fine though, get a badmab header and ZZP catted dp.
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post #7 of 17 (permalink) Old 04-18-2013, 06:48 PM
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buy full ZZP header to muffler, sell me GMPP cat-back LOL
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post #8 of 17 (permalink) Old 04-18-2013, 07:04 PM
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Gmpp did sell a honed header. Make sure you don't have that before buying new header.

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post #9 of 17 (permalink) Old 04-18-2013, 07:05 PM
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wow ya learn something new everyday.
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post #10 of 17 (permalink) Old 04-19-2013, 11:25 AM
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The gmpp muffler is made by borla, unless your changing the size from the cat back it won't really make a difference, just do the header.
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