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? Exhaust making a "hissing" noise...

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Old Nov 20, 2007
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Question ? Exhaust making a "hissing" noise...
I have a Civic LX Auto w/ an Injen SRI and Greddy SP2 exhaust and when I first installed it, the car would make a very low hissing sound as I shut the car off. However, now I seem to hear it whenever I accelerate during driving.

I ask some people in the past and they said it is the left over air (pressure in the pipes), but as I mentioned, it only did it when I shut the car off. Now it happens as I accelerate.

Anyone know what this sound is?

Thanks in advance… (and please avoid unnecessary comments)
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Old Nov 20, 2007
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Re: ? Exhaust making a "hissing" noise...
Its your intake. Thats normal.
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Old Nov 20, 2007
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Re: ? Exhaust making a "hissing" noise...
it could be an exhaust leak since its during acceleration.
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Old Nov 20, 2007
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Re: ? Exhaust making a "hissing" noise...
Its your intake. Thats normal.
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Old Nov 20, 2007
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Re: ? Exhaust making a "hissing" noise...
its the intake.
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Old Nov 20, 2007
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Re: ? Exhaust making a "hissing" noise...
If it were an exhaust leak, you would know it. The "hissing" sound is normal from the intake. An exhaust leak has a completely different sound.
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Old Nov 20, 2007
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Re: ? Exhaust making a "hissing" noise...
Yes....the factorizer signature is spreading!!!
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Old Nov 20, 2007
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Re: ? Exhaust making a "hissing" noise...
dude its ur intake....mine does exactly what you jus said.
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Old Nov 20, 2007
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Re: ? Exhaust making a "hissing" noise...
Originally Posted by speedfoos
Yes....the factorizer signature is spreading!!!
haha...w3rd.
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