370z soho-a2a-supercharger kit TIAL QR blow-off valve sound issue.

vqholic@Korea · 04-06-2022, 07:58 AM

Hello, I've seen all the videos, but I haven't heard the sound from my blow-off valve.

Green 2psi spring.There is a fluttering sound like a small bird chirping.

I don't know what the problem is. Help me. Max boost is about 12.5 psi, and you can hear it on Excel-off every section.

bov vacuum hose was connected to the stillen manifold and connected to the boost gauge using T.

I don't know if the installation is wrong or if it's a component problem. It was installed for the first time a year ago, and I heard this sound from then on.

<bov noise link>
https://youtube.com/shorts/4AmBml3Pj3k?feature=share

JVerge5363 · 04-06-2022, 10:18 PM

Quote:

Originally Posted by vqholic@Korea

Hello, I've seen all the videos, but I haven't heard the sound from my blow-off valve.

Green 2psi spring.There is a fluttering sound like a small bird chirping.

I don't know what the problem is. Help me. Max boost is about 12.5 psi, and you can hear it on Excel-off every section.

<bov noise link>
https://youtu.be/86O_zekAeBI

https://youtube.com/shorts/4AmBml3Pj3k?feature=share

https://youtu.be/_zgzXrRMMBk

That sounds weird!

TopgunZ · 04-07-2022, 08:44 AM

Its not just you....Its inherent to the Vortech systems if you do not run a filter. The Rotrex does not sufffer from this since it runs a filter.

vqholic@Korea · 04-07-2022, 10:08 AM

Quote:

Originally Posted by TopgunZ

Its not just you....Its inherent to the Vortech systems if you do not run a filter. The Rotrex does not sufffer from this since it runs a filter.

Other than the noise of the Vortech flutter, There is no sound of a woosh from which the air from the tial QR bov is released.

JVerge5363 · 04-07-2022, 09:46 PM

Quote:

Originally Posted by vqholic@Korea

Other than the noise of the Vortech flutter, There is no sound of a woosh from which the air from the tial QR bov is released.

Lack of boost?

vqholic@Korea · 04-07-2022, 11:05 PM

Quote:

Originally Posted by JVerge5363

Lack of boost?

The vacuum hose is connected from a vacuum port located in the front of the stillen manifold to the tial blow-off valve.And I used a "T" fitting to connect the boost gauge to the corresponding vacuum hose. Is the boost weak? Can the boost gauge vacuum line be connected elsewhere?

Can I connect the boost gauge to the brake booster vacuumline?

NorthStyle · 04-08-2022, 02:11 PM

What is the boost gauge reading?

vqholic@Korea · 04-08-2022, 06:47 PM

Quote:

Originally Posted by NorthStyle

What is the boost gauge reading?

-8? -10 psi at idle. When cruising, it falls like an idle state, and is 3rd gear pull 12.5 psi.

vqholic@Korea · 04-09-2022, 10:07 PM

Quote:

Originally Posted by NorthStyle

What is the boost gauge reading?

Is it okay to change the tial vacuum hose to 1/4" inside diameter?

TeaDubb · 04-10-2022, 11:08 PM

I have a similar issue. I just bought a 370z with a GTM supercharger, and what I believe is a Tial QRJ. I get fluttering when I'm cruising at 5% throttle. Pretty sure my issue is I need a stiffer spring.. I still hear tons of air being expelled from the BOV when I should hear it.

Any chance you have a friend with a spare BOV that would fit your flange?

Sent from my SM-G991W using Tapatalk

vqholic@Korea · 04-25-2022, 10:40 AM

The bov is operating normally. However, QR has a very small sound compared to Q, so I couldn't hear the sound inside the car.

04-07-2022, 08:44 AM	#3 (permalink)
TopgunZ A True Z Fanatic Join Date: Jun 2012 Location: Minneapolis Posts: 2,651 Drives: 06 350Z , 09 370Z MT Rep Power: 6834	Its not just you....Its inherent to the Vortech systems if you do not run a filter. The Rotrex does not sufffer from this since it runs a filter. Optimiser and vqholic@Korea like this. __________________ ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

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04-08-2022, 02:11 PM	#7 (permalink)
NorthStyle A True Z Fanatic Join Date: Aug 2015 Location: Deutschland + SC/FL USA Posts: 1,255 Drives: 2011 370Z Nismo Rep Power: 24277	What is the boost gauge reading?

04-10-2022, 11:08 PM	#10 (permalink)
TeaDubb Base Member Join Date: Feb 2022 Location: Edmonton Posts: 7 Drives: 09 370z Rep Power: 3	I have a similar issue. I just bought a 370z with a GTM supercharger, and what I believe is a Tial QRJ. I get fluttering when I'm cruising at 5% throttle. Pretty sure my issue is I need a stiffer spring.. I still hear tons of air being expelled from the BOV when I should hear it. Any chance you have a friend with a spare BOV that would fit your flange? Sent from my SM-G991W using Tapatalk

04-25-2022, 10:40 AM	#11 (permalink)
vqholic@Korea Base Member Join Date: Nov 2019 Location: Republic of Korea Posts: 37 Drives: 10 Nissan 370z SC MT Rep Power: 55	The bov is operating normally. However, QR has a very small sound compared to Q, so I couldn't hear the sound inside the car.