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Just installed an Injen CAI...just a question about acceleration. I am noticing on hard acceleration there is a sound almost like a blowoff valve. Is this normal or did I somehow install something incorrectly? Also there seems to be a clunk when I first start it up. Could just be the pipe moving and I am probably just being paranoid.

Anyone else notice these types of noise?

 
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its normal, the clunk when you start up is from the filter (i dont know why it does that) the sounds are normal so don't worry

 
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Yes everything is normal the clunk is from the filter proly hitting something whenyou start or if you have a stru tower bar the tube is hitting the bar . And yes the "blow off valve " sound is normal i had a aem cai and it did the same thing

 
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Okay, thanks, that is what I thought...just didn't want to hurt the engine.

 
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mine does that too when the car changes gears, but only at half throttle-wot. Everyone says my intake sounds mean when I get on it. But everytime you clean the filter make sure you tighten down that nut thing down there. Every now and then mine will start to rattle, its a 5 min fix though.

 
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the bov sound is normal... my friend says that it sounds like i have a ghetto turbo... lol

 
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Don't get me wrong...I like the sound, just don't want it fookin up the engine. "ghetto turbo" hehehe.

Not as bad as this at least

 
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WTF? Haha! And for $180?!

Good thread. I haven't installed my Injen CAI yet, so this is good info.