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emissions with cam

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Old 03-08-2011, 04:13 PM
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Default emissions with cam

i going to put cam in my ls1. what is a cam safe for emissions. is 230 definate no pass or is 224 better. just wondering dont whant to get the car all together and the it fails. what is a decent power cam that will pass emissons test.
Old 03-08-2011, 07:25 PM
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It will all depend on the tune,,what kind of testing do they do up there, do they just plug into the obd port, or do the sniff the exhaust?
Old 03-08-2011, 07:33 PM
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I'm from ontario, and interested in what you already have done to your car. I'm about to start modding my 02 ws6 collectors edition and I'm not sure what will pass?
Old 03-08-2011, 07:42 PM
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To be safe i would go with the good ol proven 224 cam for sure!!
Old 03-09-2011, 01:31 PM
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im in ontario too. they do a sniffer test in exhaust and run it on a dyno. i have put kooks longtubes on it with cats ls6 intake and slp lid below. havent tested it with this tuff yet put on just after last etest 2 year ago. i dont know if the hi flow cats would make it pass even now. i geeting ls6 stage 2.5 heads and a cam havent decided on the cam yet. i want an ms4 or ms3 but it prob wont pass with thouse big cams. i was thinking of getting a 224 like sugested. i also want to get a fast inatke too.
Old 03-09-2011, 02:52 PM
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To pass most sniffer tests, the cam must have sufficient underlap (i.e. at least 4° of negative overlap) and front NBO2's must be functioning (allowing PCM to trim).




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