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Strange hiss on acceleration with HFC

Hello, I have Nismo CBE. I installed HFC yesterday. Now with HFC I hear strange hiss. Only on full throttle acceleration. Hiss is mostly coming from back of my car.

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		Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain > Intake/Exhaust
Strange hiss on acceleration with HFC

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09-16-2016, 10:24 AM	#1 (permalink)
Cegla Base Member Join Date: Mar 2013 Location: Poland Posts: 18 Drives: 370Z GT Edition Rep Power: 13	Strange hiss on acceleration with HFC Hello, I have Nismo CBE. I installed HFC yesterday. Now with HFC I hear strange hiss. Only on full throttle acceleration. Hiss is mostly coming from back of my car. Is this normal? There is almost no rasp at any time or hiss on deacceleration. With stock cats everything was normal. Sorry for my English. Chris Last edited by Cegla; 09-16-2016 at 11:14 AM.

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