is this normal
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Senior User
Joined: May 2007
Posts: 241
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is this normal
sorry for what may be a stupid question, but i installed my afe stage 2 intake this weekend and did the foil delete and now when i give her a bit of juice and let off the throttle it sounds like my truck is exhaling quite loudly, almost like a blowoff valve. sounds killer but i want to make sure it is normal.
Hotshot
Joined: Nov 2006
Posts: 11,286
Likes: 263
From: North of Greenville
Normal. When you back of the throttle quickly, the whooshing is just a result of excess boost reversing its flow back out of the system due to the "lack of need" with the released throttle.
