Quote:
Originally Posted by wstar
Well, Chris's explanation about air pressure equalization between banks makes as much sense as anything else I've heard. If that's what causes the hiss, the hiss is probably present on any exhaust setup with a decent connection between the two sides, it's just a question whether and how well you can hear it under what conditions.
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This is probably why the base stock exhaust is setup the way it is. To mitigate as much of this hiss as possible.