Weird noise coming from my exhaust. Berk HFC and Magnaflow
10-18-2008, 06:30 PM
#16
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I also have this same problem, it started when I installed my FI HFC, noticed it pretty much the next after i put them on. This seems to be a common thing with our cars.
10-18-2008, 07:49 PM
#18
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I don't know if this helps but I've posted my exhaust note before w/hfc &
w/o hfc and you could hear this sound with HFC at the end of last rev.
With HFC
http://s355.photobucket.com/albums/r...rent=FIHFC.flv
without HFC
http://s355.photobucket.com/albums/r...t=MOV01620.flv
w/o hfc and you could hear this sound with HFC at the end of last rev.
With HFC
http://s355.photobucket.com/albums/r...rent=FIHFC.flv
without HFC
http://s355.photobucket.com/albums/r...t=MOV01620.flv
10-19-2008, 02:52 PM
#23
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I have a rattle as well from the heat shield, but mainly at cold start. I heard that infiniti circulated a bulletin about this but has yet to issue a recall. Either way, they are aware of the problem and it's not uncommon.
10-19-2008, 03:31 PM
#24
Registered User
My guess is with the less restrictive CAT's your hearing VVEL at work, going back to stock cats would resolve the issue.
10-20-2008, 03:13 PM
#25
You're getting a slight resonance from the combo of HFC's & the exhaust. The point where it resonates will vary as you change exhaust components. If you had a different exhaust, the resonace may move up or down in RPM, or disapear altogether. But it's completely normal.
10-20-2008, 03:29 PM
#26
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You're getting a slight resonance from the combo of HFC's & the exhaust. The point where it resonates will vary as you change exhaust components. If you had a different exhaust, the resonace may move up or down in RPM, or disapear altogether. But it's completely normal.
got a ? for you all at berk. How come your HFC dont come with gaskets?
10-20-2008, 03:31 PM
#27
We're the only manufactuer that include a set of gaskets for the OEM header/cat connection. Depending on when you bought them, they are either copper or soft crush graphite. The newest ones are the soft crush graphite gaskets.