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Board index » 1997-2008 Grand Prix Discussion » 3800 Engine L36/L26

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MaDMiKe187
 Post subject: stock exhaust piping?
PostPosted: Sun Mar 14, 2010 3:04 pm 
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i wanna get a magnaflow catback system i wanna no what the stock piping is. not sure if i should use the stock piping or do 2.5 piping
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BigManAndy
PostPosted: Sun Mar 14, 2010 4:00 pm 
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Stock is 2.25". 2.5 is a very common size when upgrading exhaust. I currently run 2.5 inch pipe.

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MaDMiKe187
PostPosted: Sun Mar 14, 2010 5:06 pm 
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oh very nice now i was thinkin of removing my resonator u think itll sound better?
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Don_Rome
PostPosted: Sun Mar 14, 2010 7:01 pm 
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If you get a MF catback it will replace the factory pipes and resonator.

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MaDMiKe187
PostPosted: Sun Mar 14, 2010 9:21 pm 
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oh ok perfect thanks
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Jarad
PostPosted: Mon Mar 15, 2010 12:32 pm 
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MaDMiKe187 wrote:
oh very nice now i was thinkin of removing my resonator u think itll sound better?

I doubt it will. If you were doing headers full exhaust than some really good mufflers and you keep your cat than maybe. But I would leave the res in there. You should still get a nice deep tone nothing loud or raspy with the res and magnaflow catback. Like don said a full cat should come with everything you need including a res

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The Guz
PostPosted: Mon Mar 15, 2010 1:53 pm 
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You can always go with the GMPP cat back. Its made by magnaflow.

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MaDMiKe187
PostPosted: Mon Mar 15, 2010 4:46 pm 
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sound the same? and how about the price
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The Guz
PostPosted: Mon Mar 15, 2010 6:52 pm 
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It sounds pretty good. I know there are some sound clips online somewhere. It has a nice low rumble at idle and sounds decent of the 3.8. Its been compared to the Borla cat back. The catback is for 97-03. Not sure what year your car is. You should search because I think it also fits the 04+. You can get it from monsterpartsonline (now shopgmparts) for about $500. The part number is 12498617.

This is what it looks like.
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Don_Rome
PostPosted: Mon Mar 15, 2010 8:20 pm 
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That's a nice system and the price is affordable.

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MaDMiKe187
PostPosted: Mon Mar 15, 2010 10:29 pm 
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i have an 06 yep looks nice ill check it out on you tube not a fan of the single tips tho i want the dual tips
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Don_Rome
PostPosted: Mon Mar 15, 2010 10:31 pm 
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You can always sell those tips and buy some duals.

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The Guz
PostPosted: Tue Mar 16, 2010 2:37 pm 
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If you get the SE rear bumper then the single tips will fit and look great.

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MaDMiKe187
PostPosted: Tue Mar 16, 2010 7:41 pm 
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oh yeh iseen that bumper was thinkin about it i might just colour match the panel and add the dual
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