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Old 02-09-2017, 03:23 PM   #1
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Test Pipes / Cat Delete

Best addition I have ever did. When I added the Cat Back exhaust I did get some drone at any steady rpm above 3,000 rpm. When I added the test pipes it is now quieter than the stock exhaust at cruising speed. No exhaust sound unless you down shift and get on the throttle. At idle it is much louder (sounds great) and when accelerating it sounds awesome. A must have for any modified exhaust. Now for smog no problems here in California. In my city they do not use the sniffer test, just the OBD11 test. Passed with no problem.

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Old 02-09-2017, 04:41 PM   #2
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Sniffer test is gone in smog tests in California for cars produced after 2000
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Old 02-09-2017, 05:06 PM   #3
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I assume that the primary manifold cats have not been touched, so that your Check Engine light does not come on?
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Old 02-09-2017, 09:09 PM   #4
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Quote:
Originally Posted by Dave80GTSi View Post
I assume that the primary manifold cats have not been touched, so that your Check Engine light does not come on?
Correct, just the secondary cats are removed and replaced with the test pipes.

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