What does the PSI rating on a blow-off valve spring mean?

The PSI rating on the spring indicates the minimum boost pressure required to overcome the spring tension and open the blow-off valve. A lower PSI spring, like this 2 PSI version, will open at lower boost levels.

How do I know if I need a 2 PSI spring?

You would typically need a 2 PSI spring if your turbo system operates at very low boost levels, or if you've experienced compressor surge with a stiffer spring. It's best to consult your turbo system's specifications or a performance tuning guide to determine the correct spring rate for your application.

Does this spring come with a new diaphragm or other valve components?

This product is for the 2 PSI spring only. It is designed to replace the existing spring within your TiAL Sport QR Blow-Off Valve (29mm model). You will need to reuse the other components of your existing valve.

TiAL Sport QR BOV 2 PSI Spring Blue 002987

Name: TiAL Sport QR BOV 2 PSI Spring - Blue (29mm)
Brand: TiALSport
SKU: tialsport-tial-sport-qr-bov-2-psi-spring-blue-29mm-t14-538100
Price: 301.50 USD
Availability: BackOrder

TiAL Sport QR BOV 2 PSI Spring - Blue (29mm)

$301.50

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

TiAL Sport QR BOV 2 PSI Spring - Blue (29mm)

Key Features

This is a 2 PSI spring for the TiAL Sport QR Blow-Off Valve.
The spring is blue, indicating its 2 PSI rating.
Designed for the 29mm version of the TiAL Sport QR BOV.
Constructed from high-tensile steel for durability.
Allows for precise tuning of boost pressure release.
Not CARB approved and cannot be shipped to California.

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Product Details

This 2 PSI spring for your TiAL Sport QR Blow-Off Valve is made from durable, high-tensile steel, ensuring it can handle the pressures of forced induction. It's designed to work specifically with the 29mm QR model, offering a precise calibration for your turbo system. Choosing the right spring rate is key to proper boost control and preventing compressor surge, and this blue-colored spring is a well-built option for fine-tuning your setup.

The spring's tension dictates when the blow-off valve opens to release excess boost pressure. A 2 PSI spring is on the lighter side, meaning the valve will open sooner and at lower boost levels compared to a stiffer spring. This can be beneficial for applications with very sensitive boost control or where you want to ensure rapid pressure release to protect your turbocharger. It's a solid choice if you've found your current spring is too stiff for your turbo's operating range.

When installing a new spring, it's a good idea to check the condition of your blow-off valve's diaphragm and seals to ensure everything is working in harmony. This spring is a direct replacement part for the 29mm QR model, making the swap straightforward for those familiar with TiAL blow-off valves.