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 12:14 PM.
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