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Old 04-05-2018, 07:35 AM   #5
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Join Date: Nov 2010
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Quote:
Originally Posted by sfkjeld View Post
Just curious, what is the SAI delete?
Removal of the Secondary Air Injection system.

The SAI is an air pump that injects air into the exhaust for about 90 seconds at cold start up to help the catalytic converters get up to temp faster and to reduce cold start emissions.

The air pump itself is on the passenger side of the engine compartment above the intake manifold. It kind of looks like an alternator but without a pulley.

When you start your car cold, listen for a motor whine in the background for a short time. That's the SAI pump working.
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