Does the Super SQV4 Blow-Off Valve Kit vent to atmosphere on the RZ34?

No. The Super SQV4 Blow-Off Valve Kit for the RZ34 Nissan Z comes with the HKS suction return kit, which sends the released air back to the intake side. HKS Japan also notes that atmospheric release is not compliant for Japanese vehicle inspection, and this version keeps the air in the system.

Does the kit include a valve for each turbocharger?

Yes. HKS mounts one Super SQV4 on each bank of the VR30DDTT, so each valve releases excess boost from its own turbocharger. HKS says this layout gives stable operation from low to high boost pressure, and both valves come in the kit together with the hoses, bracket and return parts.

Does the Nissan Z need a tune after installing the SQV4 kit?

No. HKS does not list an engine management requirement for this kit in the information BA reviewed. Owners who already run a tune should still let their tuner know about the change, since the kit alters the charge piping between the turbochargers and the intercooler.

How does the SQV4 differ from a basic blow-off valve?

The HKS SQV4 is a sequential design with a primary and a secondary valve. Differential pressure control lets it open progressively across the boost range, and the pull-type relief layout keeps operation stable. On the RZ34 kit, HKS fits one SQV4 to each bank so every turbocharger has its own valve.

Is the SQV4 kit difficult to install on the RZ34?

The kit is a moderate job for an experienced installer. HKS notes that factory parts such as a wiring bracket, the cowl top cover and air cleaner need modification, and the charge piping between the turbochargers and the intercooler is changed to the dedicated 4-ply silicone hose. BA recommends professional installation.

Description

Additional Info

Shipping policy

BP PRICING DIFFERENCE

Reviews

Product Inquiry

Description

HKS Super SQV4 Blow-Off Valve Kit with Suction Return for RZ34 Nissan Z

The HKS Super SQV4 Blow-Off Valve Kit with Suction Return for the RZ34 Nissan Z mounts one Super SQV4 on each bank of the twin-turbo VR30DDTT, and the included return kit routes the released air back to the intake side. Each valve uses the HKS sequential two-stage structure with primary and secondary valves under differential pressure control, so it stays stable from low to high boost. It suits a Z owner who wants HKS valves on both turbos while keeping the vented air inside the system. Anyone set on a vent-to-atmosphere setup should know this version is built around the return kit.

Features

Two Super SQV4 valves, each releasing excess boost from its own VR30DDTT turbocharger on throttle lift
Sequential two-stage design with primary and secondary valves
Differential pressure control with a pull-type relief layout for stable operation from low to high boost
Suction return kit with return hose and return pipe that send released air back to the intake side
Dedicated 4-ply silicone hose for the section between turbocharger and intercooler
Molded return hose shaped to sit neatly in the engine bay
Silver valve finish, listed by HKS Japan as Super SQV4 Silver

Applications

Nissan Z: RZ34 | 2022-2025 | VR30DDTT

Notes

This part number, 71008-AN030V, is the Super SQV4 Blow-Off Valve Kit version that HKS Japan lists with the suction return kit included
HKS Japan lists the contents as the SSQV bodies, SQV hose, mounting bracket, return hose, return pipe and related parts
HKS notes that some factory parts, including a wiring bracket, the cowl top cover and air cleaner, need modification during installation
HKS does not list an engine management requirement for this kit

Frequently Asked Questions

Does the Super SQV4 Blow-Off Valve Kit vent to atmosphere on the RZ34? No. The Super SQV4 Blow-Off Valve Kit for the RZ34 Nissan Z comes with the HKS suction return kit, which sends the released air back to the intake side. HKS Japan also notes that atmospheric release is not compliant for Japanese vehicle inspection, and this version keeps the air in the system.
Does the kit include a valve for each turbocharger? Yes. HKS mounts one Super SQV4 on each bank of the VR30DDTT, so each valve releases excess boost from its own turbocharger. HKS says this layout gives stable operation from low to high boost pressure, and both valves come in the kit together with the hoses, bracket and return parts.
Does the Nissan Z need a tune after installing the SQV4 kit? No. HKS does not list an engine management requirement for this kit in the information BA reviewed. Owners who already run a tune should still let their tuner know about the change, since the kit alters the charge piping between the turbochargers and the intercooler.
How does the SQV4 differ from a basic blow-off valve? The HKS SQV4 is a sequential design with a primary and a secondary valve. Differential pressure control lets it open progressively across the boost range, and the pull-type relief layout keeps operation stable. On the RZ34 kit, HKS fits one SQV4 to each bank so every turbocharger has its own valve.
Is the SQV4 kit difficult to install on the RZ34? The kit is a moderate job for an experienced installer. HKS notes that factory parts such as a wiring bracket, the cowl top cover and air cleaner need modification, and the charge piping between the turbochargers and the intercooler is changed to the dedicated 4-ply silicone hose. BA recommends professional installation.

About HKS

HKS is a Japanese performance engineering brand founded in 1973 and headquartered in Fujinomiya, Shizuoka, with a long-standing reputation for developing high-quality aftermarket parts and motorsport-proven technology for enthusiast and professional applications. Known for innovations in turbocharging and engine performance, HKS produces a broad range of components including exhaust systems, turbo kits, electronics / engine management, and suspension solutions, with product development heavily influenced by decades of involvement in racing disciplines such as circuit time attack, drag, and drifting.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Product Inquiry

First Name (*required)

Last Name (*required)

Your E-Mail (*required)

Telephone Number (*required)

Country (*required)

Vehicle Year / Make / Model (*required)

Please Explain What do you want to do with your vehicle

Additional Information (optional)

I agree to the terms & conditions and privacy policy and to have Bulletproof Automotive LLC contact me for promotion, marketing and other purposes via email, phone or SMS message.

HKS Super SQV4 Blow-Off Valve Kit with Suction Return for RZ34 Nissan Z [71008-AN030V]

Guaranteed Safe Checkout

HKS Super SQV4 Blow-Off Valve Kit with Suction Return for RZ34 Nissan Z

Features

Applications

Notes

Frequently Asked Questions

About HKS

Reviews