Quote:
Originally Posted by synolimit
Back pressure is kind of a myth.
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Not exactly. Too much flow when the engine isn't drawing in enough air /or there is too much valve timing (typically, at lower RPMS) to match the exhaust will slow down the exhaust pulses.
But anyway, yeah, the VQ37HR sounds like a tractor without cleverly placed resonators.
You can add resonators strategically to minimize the noise -- there's a thread on this floating around.