Berk HFCs on Factory Nismo Exhaust RASP

Armhunter · 10-30-2012, 01:49 PM

UPDATE!!

Just talked to the guys at FI. From what they told me is the Nismo Exhaust is not built to take that much air. The Test Pipes or even the HFC are allowing more airflow through the Nismo exhaust and it will create that sound. He said once I get their exhaust installed it will eliminate the sound. They said i will still have a small hiss from letting off the gas but it wont be the Rasp that we hear now. Just thought you all wanted to know.

Nu2Nizmo's · 10-30-2012, 03:32 PM

Quote:

Originally Posted by Armhunter

UPDATE!!

Just talked to the guys at FI. From what they told me is the Nismo Exhaust is not built to take that much air. The Test Pipes or even the HFC are allowing more airflow through the Nismo exhaust and it will create that sound. He said once I get their exhaust installed it will eliminate the sound. They said i will still have a small hiss from letting off the gas but it wont be the Rasp that we hear now. Just thought you all wanted to know.

Thx for the update AH..

Red · 05-14-2013, 09:49 AM

Installed the STillen g3 intakes and Berk HFC on the Nis this weekend. What a big difference over stock, love the sound and the car comes alive at 4k rpms. More so then before. Unfortunately I Do have the Rasp

But I mostly here it when powering thru first and then can't really hear it thru the other gears.
Hopefully it will go away in time or I might have to upgrade the CBE. But I like the sound, hopefully the rasp will go away.

370Zsteve · 05-14-2013, 10:33 AM

The Berk HFC steel is rather thin. Some have complained of a metallic noise.

fuct · 05-14-2013, 11:38 AM

Quote:

Originally Posted by Armhunter

UPDATE!!

Just talked to the guys at FI. From what they told me is the Nismo Exhaust is not built to take that much air. The Test Pipes or even the HFC are allowing more airflow through the Nismo exhaust and it will create that sound. He said once I get their exhaust installed it will eliminate the sound. They said i will still have a small hiss from letting off the gas but it wont be the Rasp that we hear now. Just thought you all wanted to know.

i had CNT test pipes (POS broke last year) and never had a rasp w my factory nismo exhaust..... just that deceleration hiss.

QVu · 05-15-2013, 11:00 AM

I installed the FI CBE after the Berk HFCs, and the rasp is gone. All there is now is the hiss which I have grown to like.

05-14-2013, 09:49 AM	#3 (permalink)
Red Base Member Join Date: Jul 2010 Location: new mexico Posts: 6 Drives: 370 nismo black Rep Power: 16	Installed the STillen g3 intakes and Berk HFC on the Nis this weekend. What a big difference over stock, love the sound and the car comes alive at 4k rpms. More so then before. Unfortunately I Do have the Rasp But I mostly here it when powering thru first and then can't really hear it thru the other gears. Hopefully it will go away in time or I might have to upgrade the CBE. But I like the sound, hopefully the rasp will go away. Last edited by Red; 05-14-2013 at 09:51 AM. Reason: misspelled

05-14-2013, 10:33 AM	#4 (permalink)
370Zsteve A True Z Fanatic Join Date: Sep 2009 Location: Gold Coast CT Posts: 10,599 Drives: 2019 Corvette G.S. Rep Power: 43	The Berk HFC steel is rather thin. Some have complained of a metallic noise. __________________ SOLD MY Z MARCH 2018 - another Core OG moves on - new ride 2019 Z Corvette Grand Sport - no mods necessary but already have eyes on HFC and intakes LOL IT NEVER ENDS.

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10-30-2012, 01:49 PM	#1 (permalink)
Armhunter Enthusiast Member Join Date: Mar 2012 Location: bakersfield, CA Posts: 338 Drives: 12 Nissan 370z Nismo Rep Power: 14	UPDATE!! Just talked to the guys at FI. From what they told me is the Nismo Exhaust is not built to take that much air. The Test Pipes or even the HFC are allowing more airflow through the Nismo exhaust and it will create that sound. He said once I get their exhaust installed it will eliminate the sound. They said i will still have a small hiss from letting off the gas but it wont be the Rasp that we hear now. Just thought you all wanted to know.

05-15-2013, 11:00 AM	#6 (permalink)
QVu Base Member Join Date: Sep 2010 Location: Ventura County, CA Posts: 74 Drives: 2010 Nismo 370z #637 Rep Power: 15	I installed the FI CBE after the Berk HFCs, and the rasp is gone. All there is now is the hiss which I have grown to like.

Berk HFCs on Factory Nismo Exhaust *RASP*

Berk HFCs on Factory Nismo Exhaust RASP