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Noise After Installing S&B CAI

tjwheeler38

By tjwheeler38
in Modifications, Wheels & Tires

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tjwheeler38 New Member

tjwheeler38

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Just installed an S&B CAI, and the truck response was what I expected. But right after the engine is turned off, there is a short pop or gasping noise. Its coming from the CAI area, and I can’t find another thread that mentions this type of noise. Is this normal, or anyone else having this issue?

Anacortes Army Guy Enthusiast

Anacortes Army Guy

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The noise you describe sounds just like the one my makes approximately 45 seconds or so after shutting the engine off, however, this noise is normal (it's been discussed in a few other threads on this forum) and is unrelated to the installation of a CAI.  My truck made this noise before I installed the GM performance air intake, and still makes that same noise afterwards.  If the noise you describe is other than the one I'm referring to, then I have no idea what it might be.  How long did you have your truck before you installed the CAI?

tjwheeler38 New Member

tjwheeler38

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5 hours ago, Anacortes Army Guy said:

The noise you describe sounds just like the one my makes approximately 45 seconds or so after shutting the engine off, however, this noise is normal (it's been discussed in a few other threads on this forum) and is unrelated to the installation of a CAI.  My truck made this noise before I installed the GM performance air intake, and still makes that same noise afterwards.  If the noise you describe is other than the one I'm referring to, then I have no idea what it might be.  How long did you have your truck before you installed the CAI?

I had the truck for about a year before installing the CAI and never heard this noise before. After posting this I saw a thread where it was explained as remaining air exhausting out the engine manifold when shutdown. The stock air box dampens this noise where as after market CAI’s don’t. I had a K&N intake on another truck and it didn’t make that noise so it caught me off guard.

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