Hissing noise upon deceleration? - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 09-16-2013, 11:19 PM Thread Starter
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Hissing noise upon deceleration?

Hello, new member here so please excuse me if I am posting this in the wrong place etc. My truck is a 2002 F250 7.3 Diesel 4x4. I currently have the 4" turbo back exhaust on it as well as an EDGE programmer. Tonight I installed the AFE Stage 2 PRO DRY intake. While I was driving I noticed that when I let off the accelerator there was a sound like a rush of air from the hood. I have always kept my trucks stock when it came to engine mods so I am not sure what it could be. I would greatly appreciate any insight. Thank you in advance!!
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post #2 of 2 Old 09-17-2013, 04:23 AM
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normal sound, now that you have an open air system. Just excessive air, that was not pushed through motor, "bleeding" back out the intake.

99.5 x-cab 7.3l, 6spd, 161k miles.....
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afe , deceleration , intake , noise

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