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Discussion Starter #1
I've had this very annoying for quite awhile and have taken to a few mechanics who can't find it either. It almost sounds like a turbo spooling, however i don't have turbo. Its pretty loud too. I have replaced the pipe from the manifold to the cat, b/c of another leak. Thats when i started to here this one. All new gaskets were used in the replacment of other pipe. I don't have a cat-back system its all stock except for the muffler. ANy help will keep my hair from leaving my head.
 
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I was going to sat that if it was a Classic(i.e.91-93)SE-R, it might be your AIR valve or fitting on your exhaust. But, since you don't have a Classic, I'm not sure what it could be...Are all the gaskets and hardware torqued to spec? Have you tried starting the car and trying to see and hear from under the car where the leak is?
 

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Discussion Starter #5
I was under it but I couldn't hear it. And from what people say its pretty loud. It leads me to believe its under the hood some where. I'm thinking maybe at the manifold? I'll find out this weekend.
 
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