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05-20-2008, 07:42 PM #1
Need help with California smog regulations
Hey everyone I am going to be removing my slp loudmouth catback exhaust on my 00 trans am and replacing it with gmmg exhaust, i want to go headers and exhaust, but what exactly is legal for california.........what would i need to go with headers and exhaust to make it california legal emissions? thanks for the help in advance.................stupid california!!!
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05-20-2008, 08:23 PM #2
long tube headers are illegal. in cali if you move your catalytic converters you fail.
04 C5 A4 Torch Red - sold
2009 CTS4 Ice Black - sold
2013 1500 Silverado Z71 - sold
02 Z/28 M6 Onyx Black All Options - Sold
2014 Caddy CTS4 - DD
2016 Silverado 2500HD
2020 Caddy XT6
2020 2SS Vert
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05-20-2008, 09:48 PM #3
All smog emissions must be in their stock location. If you change your exhaust it has to have a CARB #. As far as road regulations with aftermarket exhaust you can't surpass 90 db.
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05-21-2008, 10:54 PM #4
- Join Date
- Jan 2008
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- Los Angeles
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Fadeing Grey- 1994 Chevy Astro Van
I've had the same question for a while. So what do you run on your cars?
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05-21-2008, 11:50 PM #5
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- Jun 2006
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- Ft. Lee, Virginia
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Artic White- 2001 Chevy Camaro SS
My buddy lives in Glendora, he's got shorties and the slp loudmouth. He still passes every year. I guess shorties are better than anything?...
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05-22-2008, 03:41 PM #6
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05-23-2008, 01:18 PM #7
- Join Date
- Feb 2007
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- Bakersfield, CA
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- 43
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- 548
86 Buick Grand National- 02 WS6-M6 407 RWHP
Talk to jim, when he did my headers i made sure that he knew a smog guy in town first. Hopefully he still does or my headers and cam have to be swapped out next march, which would not be good.
I would just go with some pacesetter headers and something cheaper as far as exhaust goes that gmmg setup is way overpriced.
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