Headers and e-test
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Melting Slicks
Joined: Jun 2011
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Headers and e-test
Been thinking about getting a set of headers and x-pipe for my 97 c5. The thing holding me back is Southern Ontarios emissions standards. With the recent changes to the program, my 97 is the last year they actually do the dyno test. Has anyone had any issues with etest after installing headers? Not sure how well it would do with different cats aside from OEM.
Race Director
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From: Feverish All Over
Been thinking about getting a set of headers and x-pipe for my 97 c5. The thing holding me back is Southern Ontarios emissions standards. With the recent changes to the program, my 97 is the last year they actually do the dyno test. Has anyone had any issues with etest after installing headers? Not sure how well it would do with different cats aside from OEM.
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Melting Slicks
Joined: Jun 2011
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Race Director
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From: Feverish All Over
Not an expert, but if the cat's are good and hot when you take it in, the efficiency should be better.
Last edited by VETFEVER; Aug 14, 2016 at 04:21 PM.
Race Director
Joined: Apr 2007
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From: South Western Ontario
My 98 easily passed the tailpipe test with headers before they changed to an OBDII port test.
You can get codes like that, but if tuned right those codes will be turned off as well.
You can get codes like that, but if tuned right those codes will be turned off as well.
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Melting Slicks
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Melting Slicks
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Before the change over to ODB2 only for 98 up, I was passing the dyno test with my cammed, headers, 98 camaro.
The key is to have cats installed AND a good tune. Without the tune, it will be hard to pass. The tune required should be done on the street to better dial it in, the dyno tune doesn't do much for street conditions.
The key is to have cats installed AND a good tune. Without the tune, it will be hard to pass. The tune required should be done on the street to better dial it in, the dyno tune doesn't do much for street conditions.
Instructor
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Been thinking about getting a set of headers and x-pipe for my 97 c5. The thing holding me back is Southern Ontarios emissions standards. With the recent changes to the program, my 97 is the last year they actually do the dyno test. Has anyone had any issues with etest after installing headers? Not sure how well it would do with different cats aside from OEM.
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Melting Slicks
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Drifting
Joined: Dec 2004
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From: Oshawa Ontario
When I had headers installed on my '02 Camaro years back, I didn't run the rear set of O2 sensors, which would have thrown a code, so I had a shop program out the rear sensors altogether. The front set of O2 sensors are what control your air/fuel. The rear set provide the data for "catalytic efficiency". By deleting the rear set, that's no longer an issue.