Berk HFCs on Factory Nismo Exhaust RASP

Nu2Nizmo's · 10-30-2012, 12:22 AM

Quote:

Originally Posted by BennytheBlade

Ive got berk hfc w the nismo exhaust and g3 intakes and no rasp.
Don't know what it's like w/o the intakes.

I'm just as lucky as you. Only slight hiss I hear is when vehicle is cold during low rpm acceleration. When car warms up I hear nothing. As I accelerate only noise heard is a large amount of air rushing through the intake just like Fuct stated. No loud rattling Or rasp noise like mention by most here. I'm gonna keep my fingers crossed since I only have about 300 miles since the HFC installed. So far, love the low growling as I'm cruising down the highway.

Nu2Nizmo's · 10-30-2012, 12:28 AM

Quote:

Originally Posted by chops

i have rasp with the nismo factory exhaust and ERZ HFC's. the below is a video..it doesnt really capture the deepness of the exhaust thats awesome, but more so the rasp and decelleration hiss that i hate. from what ive posted elsewhere...

from 0-25 seconds, its a slow rev up until about 5-6k rpm. at 26 seconds or so im just jamming the throttle to the floor...the rattling (rasp) is very noticeable!

YouTube - IMG 0347

Just listened to ur sound clip and yeah that is awful. If mines made that noise then I would be annoyed too.. I hope it goes away soon for you...

Armhunter · 10-30-2012, 02:49 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, 04:32 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, 10:49 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, 11:33 AM

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

fuct · 05-14-2013, 12:38 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.

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, 12:00 PM

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.

YOUCANTZME · 05-15-2013, 01:20 PM

Sure am glad to hear the FI CBE takes care of the rasp! My Berk HFC should be here in a couple days but the exhaust wont be here for 3 more months.......and I'm just not patient enough to wait 3 months to see that HFC sitting around my garage. If it's here...it must be installed...I think I can handle a little rasp for 3 months.

conquistador · 12-02-2014, 09:49 AM

I found this sound clip and thought of this thread. I'm currently very satisfied with the way my exhaust sounds except for the slight tinny rasp at 2500 to 3500 rpm.

https://www.youtube.com/watch?v=TVcOclU9UcA

05-14-2013, 10:49 AM	#95 (permalink)
Red Base Member Join Date: Jul 2010 Location: new mexico Posts: 6 Drives: 370 nismo black Rep Power: 15	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 10:51 AM. Reason: misspelled

05-14-2013, 11:33 AM	#96 (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.

05-15-2013, 01:20 PM	#99 (permalink)
YOUCANTZME Base Member Join Date: Apr 2011 Location: Bunker Hill, WV Posts: 47 Drives: 2012 PW Nismo 370Z Rep Power: 14	Sure am glad to hear the FI CBE takes care of the rasp! My Berk HFC should be here in a couple days but the exhaust wont be here for 3 more months.......and I'm just not patient enough to wait 3 months to see that HFC sitting around my garage. If it's here...it must be installed...I think I can handle a little rasp for 3 months. __________________ 2012 PW Nismo \| FI CBE 18" res. SS \| Berk HFC's \|Swift Springs \| 15mm H&R Spacers \| 20% tint \|....Waiting to install: KWV3's

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10-30-2012, 02:49 PM	#93 (permalink)
Armhunter Enthusiast Member Join Date: Mar 2012 Location: bakersfield, CA Posts: 338 Drives: 12 Nissan 370z Nismo Rep Power: 13	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, 12:00 PM	#98 (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.

12-02-2014, 09:49 AM	#100 (permalink)
conquistador Base Member Join Date: Sep 2014 Location: CA Posts: 46 Drives: G37 Sedan Rep Power: 11	I found this sound clip and thought of this thread. I'm currently very satisfied with the way my exhaust sounds except for the slight tinny rasp at 2500 to 3500 rpm. https://www.youtube.com/watch?v=TVcOclU9UcA

Berk HFCs on Factory Nismo Exhaust *RASP*

Berk HFCs on Factory Nismo Exhaust RASP