LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

New cat back. Check.

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Old 08-13-2010, 02:28 PM
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Finally got it back up in the air to adjust the system. Was able to snap some shots.





The old system laid out on the ground:

The new kit comes shipped like this in one giant box backed in that foam stuff:
Old 08-13-2010, 03:32 PM
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that looks great what dia. is that?
Old 08-13-2010, 03:48 PM
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It's beautiful!
Old 08-13-2010, 10:43 PM
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looks real nice
Old 08-14-2010, 06:58 AM
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The entire thing is 2.5" front to back.
Old 08-14-2010, 10:20 AM
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we need to hear a sound clip of it....

DO any of you know if Corsa makes mufflers for our cars? I love they way they sound on the G8's...them and Kooks
Old 08-14-2010, 05:15 PM
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Originally Posted by Dannymik
we need to hear a sound clip of it....

DO any of you know if Corsa makes mufflers for our cars? I love they way they sound on the G8's...them and Kooks
I think they make universal mufflers, but not a cat back for our cars. But are you willing to spend the $$??
Old 08-15-2010, 10:36 AM
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this is a little embarrasing, but what does catback technically mean ?
Old 08-15-2010, 01:07 PM
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Originally Posted by Dannymik
this is a little embarrasing, but what does catback technically mean ?
Right after the catalytic converter to the mufflers
Old 08-15-2010, 07:21 PM
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Originally Posted by Nick_Nasty's_GXP
Right after the catalytic converter to the mufflers
typically there would be a resonator between the two?
Old 08-16-2010, 06:40 AM
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On our cars, yes a resonator is directly after the converter. Typically though a "cat back" system refers to basically everything after the catalytic converter. So on the W-body it is the flange, resonator, y-pipe, mufflers and tips.
Old 08-16-2010, 06:47 PM
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http://www.youtube.com/watch?v=LgXR381FqBI
Old 08-16-2010, 07:43 PM
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Yup, that's a magnaflow....I have one but it's too tame for me. So I got a cutout. Yours sounds pretty good tho.
Old 08-16-2010, 08:29 PM
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that sounds good man
Old 08-17-2010, 11:46 AM
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Sounds very good.Those tips look great.
Old 08-17-2010, 07:33 PM
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Needs a catless DP to wake it up.
Old 08-17-2010, 07:57 PM
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Nah, I'm rolling all emissions legal in the wonderful state of MA. For personal preference the volume when I am driving is perfectly fine.




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