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Author Topic: Smog Question  (Read 4760 times)

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emsvitil

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Re: Smog Question
« on: Jun 29, 2010, 09:40:33 PM »
Add a restricter after the cat to add backpressure...    (about 3/4" hole).


The backpressure will help with EGR which will reduce NOX


Take out after test.
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