AEM Bypass Valve making weird noises??
Thread Starter
Instructor
Joined: Aug 2001
Posts: 181
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From: Los Angeles, CA
AEM Bypass Valve making weird noises??
I installed my AEM CAI without the Air Bypass about a month ago. I just installed the Air Bypass valve and now it seems as thought the CAI produces a new hissing sound. Are the AEM CAIs suppose to sound different with and without the Air Bypass valve? 
Burning Brakes
Joined: Sep 2000
Posts: 1,033
Likes: 0
From: Houston, Tx, USA
Check to make sure that all the connections are sealed good and tight (around where the bypass connects to the two parts of the pipe), even the smallest leak will allow the CAI sound like crap.
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