ark grip/hfc/test pipe combo

fryzia23 · 08-01-2011, 08:39 PM

This past week Ive installed ark exhaust on my nismo. Deffinitely looks and sounds great but on the deaccelaration between 3200-2000 rpms theres this whistling noise comming from the x-pipe that is very annoying especially at night. After installing it I found out its because of the hfcs(erz) that I have. I know that ark is working on a hfc that will eliminate the noise but it will take some time before its finished. So my question is if anybody got lucky and has a combo of hfc or test pipes with ark grip exhaust that eliminates the whistling noise?

Glokwork · 08-01-2011, 09:10 PM

Is this problem just with the ark/erz combo? I have the erz/cnt hfc's, but won't have my fi tdx for a couple weeks, hope I won't have this whistling sound.

Matthew · 08-01-2011, 09:24 PM

I have Ark and Berk HFC and havtthe same problem. It's not that bad to me.

delusional · 08-01-2011, 09:49 PM

i believe that no matter what test pipe or high flow cat you run, you will get a hiss/whistle at around 3000 rpm. everyone that i've seen with hfc/tp have the hiss. i've gotten used to mine so i dont really mind it anymore

fryzia23 · 08-01-2011, 10:36 PM

Quote:

Originally Posted by Glokwork

Is this problem just with the ark/erz combo? I have the erz/cnt hfc's, but won't have my fi tdx for a couple weeks, hope I won't have this whistling sound.

I think you should be ok. Its Ark's x-pipe thats cousing the noise. You should be just fine with FI exhaust. I was thinking about getting FI one instead but didnt really wanna wait plus was couple of hundred $$ more. Now I kinda regret it...

Rooskey · 08-01-2011, 11:02 PM

Seems to be a trend with F.I. Everybody is put on a waiting list. Being a business owner myself they better get while the getting is good. The opportunist competitors are starting to make there mark. For me im sticking with my (so called sucky) stock nismo exhaust longtube header setup....

TeamARK · 08-02-2011, 11:50 AM

The rasp/hiss is not from the exhaust but from the testpipes and HFCs. This is known to be a fact. Whether you go with another brand exhaust, you WILL still get the hiss/RASP.

fryzia23 · 08-02-2011, 05:21 PM

I guess theres nothing else left for me but to hear some other exhaust combos in person before jumping into any conclusions. Id love to keep this one so if I hear the same hissing noise in diff setups its not gonna bug me as much and then I just leave it alone. Hopefully you guys at Ark can come up with a hfcs that will minimize the hiss. Any eta in that?

Glokwork · 08-02-2011, 07:50 PM

I've got almost 2k miles on my CNT hfcs never once had any hiss, there is a lot of rasp on a cold start but thats gone in a couple miles.

One_Quick_Z · 08-02-2011, 07:58 PM

The Howl/Whistle is what I like to call it, I had a whole write up in my journal thread about it including links to videos with it... My conclusion is that the way the X pipe is designed it cant handle the extra flow that happens when installing HFC's or Test Pipes.... Just save yourself the trouble get rid of it and go with FI or HKS and combo up TP or HFC's or get the longtube headers and you wont be dissapointed

Here is link to my journal thread with write up.

*One_Quick_Z's Journal/Dyno/Videos/Pics*

DAN

fryzia23 · 08-04-2011, 09:11 PM

Quote:

Originally Posted by One_Quick_Z

The Howl/Whistle is what I like to call it, I had a whole write up in my journal thread about it including links to videos with it... My conclusion is that the way the X pipe is designed it cant handle the extra flow that happens when installing HFC's or Test Pipes.... Just save yourself the trouble get rid of it and go with FI or HKS and combo up TP or HFC's or get the longtube headers and you wont be dissapointed

Here is link to my journal thread with write up.

*One_Quick_Z's Journal/Dyno/Videos/Pics*

DAN

Thats what I decided to do. I will be putting my stock nismo exhaust up for sale and once someone picks it up Ill order FI one. Hate to do this but the noise its unbearable just like you have mentioned it in your tread. Down shifting should make me smile but it just does the complete opposite.

One_Quick_Z · 08-05-2011, 03:54 AM

Glad I could be of some help

DAN

08-01-2011, 08:39 PM	#1 (permalink)
fryzia23 Enthusiast Member Join Date: Dec 2010 Location: new jersey Posts: 452 Drives: 2011 MB 370Z NISMO Rep Power: 1246	ark grip/hfc/test pipe combo This past week Ive installed ark exhaust on my nismo. Deffinitely looks and sounds great but on the deaccelaration between 3200-2000 rpms theres this whistling noise comming from the x-pipe that is very annoying especially at night. After installing it I found out its because of the hfcs(erz) that I have. I know that ark is working on a hfc that will eliminate the noise but it will take some time before its finished. So my question is if anybody got lucky and has a combo of hfc or test pipes with ark grip exhaust that eliminates the whistling noise?

08-01-2011, 09:24 PM	#3 (permalink)
Matthew Track Member Join Date: Apr 2010 Location: Clemson, SC Posts: 519 Drives: Red Rocket Rep Power: 17	I have Ark and Berk HFC and havtthe same problem. It's not that bad to me. __________________

08-01-2011, 09:49 PM	#4 (permalink)
delusional Track Member Join Date: Feb 2011 Location: NewYork Posts: 968 Drives: 09 PG T/S/N 7AT Rep Power: 16	i believe that no matter what test pipe or high flow cat you run, you will get a hiss/whistle at around 3000 rpm. everyone that i've seen with hfc/tp have the hiss. i've gotten used to mine so i dont really mind it anymore __________________ 2009 Platinum Graphite Touring [ Sport Package ¦¦ Navigation ¦¦ 7 Speed Automatic ] [ Berk ¦ H&R ¦ ONEighty ¦ K&N ¦ Stillen ¦ Eibach ¦ Cobb ¦ Ichiba ¦ Hankook ]

08-02-2011, 07:58 PM	#10 (permalink)
One_Quick_Z A True Z Fanatic Join Date: May 2009 Location: Seneca Il Posts: 1,374 Drives: 10 Civic EX Sedan Rep Power: 219	The Howl/Whistle is what I like to call it, I had a whole write up in my journal thread about it including links to videos with it... My conclusion is that the way the X pipe is designed it cant handle the extra flow that happens when installing HFC's or Test Pipes.... Just save yourself the trouble get rid of it and go with FI or HKS and combo up TP or HFC's or get the longtube headers and you wont be dissapointed Here is link to my journal thread with write up. One_Quick_Z's Journal/Dyno/Videos/Pics DAN __________________ -My BRZ with exhaust will decimate all if we overnight parts from Japan- 10 Civic EX Sedan- Current Daily

08-05-2011, 03:54 AM	#12 (permalink)
One_Quick_Z A True Z Fanatic Join Date: May 2009 Location: Seneca Il Posts: 1,374 Drives: 10 Civic EX Sedan Rep Power: 219	Glad I could be of some help DAN __________________ -My BRZ with exhaust will decimate all if we overnight parts from Japan- 10 Civic EX Sedan- Current Daily

08-01-2011, 09:10 PM	#2 (permalink)
Glokwork A True Z Fanatic Join Date: Jun 2011 Location: Roanoke, VA Posts: 2,657 Drives: 11 370Z MB 6MT Rep Power: 22	Is this problem just with the ark/erz combo? I have the erz/cnt hfc's, but won't have my fi tdx for a couple weeks, hope I won't have this whistling sound.

08-01-2011, 11:02 PM	#6 (permalink)
Rooskey Track Member Join Date: Jul 2010 Location: South Carolina Posts: 974 Drives: 2014 Alpha7 GTR Rep Power: 16	Seems to be a trend with F.I. Everybody is put on a waiting list. Being a business owner myself they better get while the getting is good. The opportunist competitors are starting to make there mark. For me im sticking with my (so called sucky) stock nismo exhaust longtube header setup....

08-02-2011, 11:50 AM	#7 (permalink)
TeamARK Track Member Join Date: Jul 2009 Location: CHINO Posts: 957 Drives: Black 350z/370z Rep Power: 17	The rasp/hiss is not from the exhaust but from the testpipes and HFCs. This is known to be a fact. Whether you go with another brand exhaust, you WILL still get the hiss/RASP.

08-02-2011, 05:21 PM	#8 (permalink)
fryzia23 Enthusiast Member Join Date: Dec 2010 Location: new jersey Posts: 452 Drives: 2011 MB 370Z NISMO Rep Power: 1246	I guess theres nothing else left for me but to hear some other exhaust combos in person before jumping into any conclusions. Id love to keep this one so if I hear the same hissing noise in diff setups its not gonna bug me as much and then I just leave it alone. Hopefully you guys at Ark can come up with a hfcs that will minimize the hiss. Any eta in that?

08-02-2011, 07:50 PM	#9 (permalink)
Glokwork A True Z Fanatic Join Date: Jun 2011 Location: Roanoke, VA Posts: 2,657 Drives: 11 370Z MB 6MT Rep Power: 22	I've got almost 2k miles on my CNT hfcs never once had any hiss, there is a lot of rasp on a cold start but thats gone in a couple miles.

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