Volume difference stock cats vs FI HFC

Originally Posted by zeeder I just bought a Z with the Fast Intentions cat back exhaust (18” resonators) and resonated high flow cats. The car is a little loud for

		Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain > Intake/Exhaust
Volume difference stock cats vs FI HFC

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3 Post By Geoff-AU

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03-24-2021, 11:42 PM

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Maestro666

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Quote:

Originally Posted by zeeder

I just bought a Z with the Fast Intentions cat back exhaust (18” resonators) and resonated high flow cats. The car is a little loud for me, does anyone know how much quieter it would be if I returned it to stock cats? The cats look a bit corroded, is there still resale/trade value?

Attachment 146594

If it's the cabin noise you are concerned about then it won't be much quieter. Sound deadening is the way to go.

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