Kia Stinger blow off valve installed turbo engine bay 3.3T performance setup

Kia Stinger BOV installed turbo engine bay revving blow off valve performance upgrade

Kia Stinger BOV kit components hoses fittings adapters turbo upgrade parts

Kia Stinger 3.3T dual blow off valve setup twin turbo performance upgrade

ADD W1 Blow Off Valve - Direct bolt on Kit for Kia Stinger 2018-up

Kia Stinger 2.0T blow off valve single BOV turbo upgrade performance part

Kia Stinger BOV close-up aluminum blow off valve turbo performance part

5.0

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Patented (US D1,028,015 S)

Upgrade your Kia Stinger (2018–2023) with the ADD W1 Direct Bolt-On Blow Off Valve Kit, engineered to improve turbo performance, throttle response, and deliver an aggressive blow-off sound.

This direct bolt-on kit replaces the factory OEM diverter valve system and installs with no cutting, welding, or modifications required — perfect for maintaining factory specifications while upgrading performance.

The ADD W1 BOV is CNC-machined from high-quality aluminum for durability and precision. It is designed to work with both stock and tuned engines, making it ideal for daily driving or high-performance builds.

Key Benefits:

Improves throttle response and turbo efficiency
Releases excess boost pressure to protect turbo system
Prevents compressor surge and reduces turbo lag
Extends turbocharger and intercooler lifespan
Direct bolt-on installation (no modification required)

Performance Function:

When running higher boost levels, pressure builds up in the intake system. The blow off valve releases excess compressed air when the throttle is closed, preventing compressor surge and protecting turbo components from damage.

Vehicle Fitment:
• 2018–2023 Kia Stinger 3.3T (Includes dual ADD W1 BOVs + adapters)
• 2018–2023 Kia Stinger 2.0T (Includes single ADD W1 BOV + adapter)

Includes:
• Vehicle-specific adapter / flange
• Hoses, fittings, bolts, O-ring seal, C-clip
• Complete installation hardware

Additional Fitment:
Fits Kia Stinger GT, GT1, GT2, and 2.0T turbocharged models (2018–2023).

Blow Off Valve vs. Blow Off Valve Pro

The main difference between the Blow off Valve Stander and the Blow off Valve Pro is that the Stander is designed for use with a smaller engine, while the Pro is designed for use with a larger engine.

The standard is the more Affordable of the two. The pro is more durable to handle higher boost and an aftermarket tuned engine with more powerful sound, better response even at a low boost.

Blow Off valve Pro will provide a powerful response even at low boost situations and produce a much more powerful sound than a Stander blow off valve.

Which one should I get?

Blow Off Valve Stander and Blow Off Valve Pro are both high-quality aluminum die-cast bodies with Blow Off valves that use CNC machining to optimize clearance and bring responsiveness.

However, the great benefit of choosing the Blow Off Valve Pro model is its ability to produce a louder and sharper open sound, which is particularly advantageous for a high performance engine. The sound it has is more powerful and generates better response even at a low boost, making it an excellent choice for those who want to make a statement with their vehicle.

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5.0

Rated 5.0 out of 5 stars

Based on 12 reviews

100%would recommend this product

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12 reviews

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TB
Ty B.
Verified Reviewer
I recommend this product
Rated 5 out of 5 stars
Yesterday
Question
So on the BOV it has that harder and softer thing what does that mean?
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ADD W1
54 seconds ago
Thank you so much for your 5-star rating and for choosing the ADD W1 Blow Off Valve Kit for your Kia Stinger! We truly appreciate your support!

Great question! The Harder and Softer markings on the BOV refer to the adjustment of the internal spring tension, which controls how easily the valve opens and releases boost pressure.

Softer: Reduces spring tension, allowing the BOV to open more easily.

Harder: Increases spring tension, requiring a stronger vacuum signal to open the BOV.

We recommend starting with the preset setting and making small adjustments only if necessary. Setting the spring too soft may cause the valve to open prematurely or leak boost pressure, while setting it too hard may prevent the valve from opening properly when you release the throttle.

If you need assistance adjusting your BOV or have any questions about your installation, please feel free to contact us. We're always happy to help!

Thank you again for your 5-star review and for being part of the ADD W1 community. We truly appreciate your trust and support!
A
Austin
I recommend this product
Rated 5 out of 5 stars
3 weeks ago
5 Stars
Super easy to install. Came with everything needed to complete the install and I’m satisfied with the quality and the sound.
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J
Jean
I recommend this product
Rated 5 out of 5 stars
3 weeks ago
5 Stars
Thanks it was decent took me a hour to do beside that it straight forward
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J
josephr60@aol.com
Verified Buyer
I recommend this product
Rated 5 out of 5 stars
2 months ago
Installation was fairly straightforward
Installation was fairly straightforward
Was this helpful?
ADD W1
2 months ago
Thank you for your review!

We're glad to hear the installation of your ADD W1 Direct Bolt-On Blow Off Valve Kit for the 2018+ Kia Stinger was straightforward. Our goal is to provide a true bolt-on upgrade with premium fitment and performance.

Thank you for choosing ADD W1, and we truly appreciate your support!
JR
Joseph R.
Verified Buyer
I recommend this product
Rated 5 out of 5 stars
2 months ago
RedWasp60
Installation was fairly straightforward, although the snap rings took a bit of time. I’m running the BOVs with Stillen intakes. The BOV sound is noticeable but somewhat quieter than some of the videos I viewed. The set screws are set as recommended 2-3 threads showing (soft - no leaks)
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ADD W1
2 months ago
Thank you for your review!

We're glad to hear the installation of your ADD W1 BOV PRO Kit for the 2018+ Kia Stinger 3.3T went smoothly overall, and that the recommended set screw adjustment is working well with no boost leaks.

The blow-off valve sound can vary depending on your vehicle's intake, exhaust, boost level, and driving conditions. While the Stillen intakes do allow the BOV sound to be heard more clearly than the factory intake.

If you'd like, feel free to share a photo or video of your installation. We'd love to see your setup, and your vehicle may even be featured on our website or social media!

Thank you for choosing ADD W1, and we truly appreciate your support!

ADD W1 Blow Off Valve - Direct bolt on Kit for Kia Stinger 2018-up

Patented (US D1,028,015 S)

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