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Old 04-15-2007, 06:12 PM
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Im thinkin bout getting a set of MAC mid lengths with the y pipe for my 99 LS1. My question is does anyone know if they come with o2 bungs for the per-cat o2 sensors welded in or will I have to do that myself. I asked the vendor, but no one got back to me yet.
Old 04-15-2007, 06:57 PM
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Yes they do.
BTW..I have a set for sale for $100..No Y-pipe though.I had to reuse it with the new headers.. The heades were on my car for about 25k miles.
Old 04-15-2007, 07:32 PM
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Originally Posted by FiredUpZ28
Im thinkin bout getting a set of MAC mid lengths with the y pipe for my 99 LS1. My question is does anyone know if they come with o2 bungs for the per-cat o2 sensors welded in or will I have to do that myself. I asked the vendor, but no one got back to me yet.
Mine had four O2 bungs on them even with the offroad Y.

-Geoff
Old 04-15-2007, 08:25 PM
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oh awesome thats good news. Wont the after-cat 02's hate the no cat-ness? Either way, I found what I was lookin for so thanks!

Sorry I was on my other account :-P
Old 04-15-2007, 08:36 PM
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Originally Posted by CarCrazyRedHead
oh awesome thats good news. Wont the after-cat 02's hate the no cat-ness? Either way, I found what I was lookin for so thanks!

Sorry I was on my other account :-P
If you don't have a tuner disable your rear o2's,the your Check engine light will turn on when you dont have catalytic converters installed.
Old 04-16-2007, 11:53 AM
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Originally Posted by CarCrazyRedHead
oh awesome thats good news. Wont the after-cat 02's hate the no cat-ness? Either way, I found what I was lookin for so thanks!

Sorry I was on my other account :-P
Never coded on my car. I ran them on y last car for a couple years like that.

-Geoff
Old 04-18-2007, 03:33 PM
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Originally Posted by BYE RICE
Yes they do.
BTW..I have a set for sale for $100..No Y-pipe though.I had to reuse it with the new headers.. The heades were on my car for about 25k miles.
Send me some pics of the headers, I might be interested. baker_f72@hotmail.com




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