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Hissing from hfc, is it a rumor?

Switching to a larger diameter Y pipe will create a very loud hiss. Replacing OEM cats with unreasonated HFC's or TP's will result in farty rattle. Both will be primarily

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		Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain > Intake/Exhaust
Hissing from hfc, is it a rumor?

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04-28-2015, 05:29 AM	#18 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 420	Switching to a larger diameter Y pipe will create a very loud hiss. Replacing OEM cats with unreasonated HFC's or TP's will result in farty rattle. Both will be primarily on decel around 2.5 K or so RPM. Only solution is to go OEM diameter Y (or Nismo OEM H), and resonated HFC/TP or LTH. Other than that its hit or miss to fix. Good luck... __________________ Enjoy it. Destroy it. Last edited by Jordo!; 05-08-2015 at 07:57 PM.

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