02-20-2010, 10:52 AM
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#11 (permalink)
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Track Member
Join Date: Jul 2009
Location: NJ
Posts: 683
Drives: 09 370z 6Speed
Rep Power: 17
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Quote:
Originally Posted by TeamARK
First off, We would like to apologize for the shipping dates. To coordinate the g37. 370z, and Genesis system from Korea wasn't easy and we still didnt get all the shipments yet. However, we will do a better job to keep the community updated with dates and such.
We did some research on the Hissing noise. We are testing out some solutions to this. For one, let me just say that the exhaust by itself does not make this noise. If you ever put your oem cat back on you will be able to hear its true tone.
we believe that the sound is generated from the flanges that meet at the HFC and headers. The sizes of these two pipes are different and by looking at some HFC's they do not taper down, but instead create a step between the two piping sizes.
Note: TONYBPD, tracking # will be in mailbox by this afternoon.
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Dont think the flanges are the problem. Even people with aftermarket headers are getting the hissing.
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