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Universal Adjustable Boost Limiter Valve (BLV)
Models Available to Control from 1-30 psi and 20-110 psi
Add Safety and Performance to your Supercharger Installation!
Add Safety: Our new Boost Limiter Valve (BLV) increases your engine safety two ways: 1) a missed speed-shift or over-revved motor can spike boost pressures and blow inlet tubes, MAF and MAP sensors, and head gaskets. The BLV will open and prevent dangerous over-boosting and save buckets of $$ and headaches. 2) with a BLV, you can set the boost level to match the maximum fuel delivery you have to prevent dangerous engine detonation at high-boost points.
Add Performance: Imagine your centrifugal supercharger comes in now at 3500 rpm and your red-line is 6500 rpm. That's 3000 rpm's of useable boost. But now, with a BLV installed, you could change your drive pulleys to bring the boost in at 2500 rpm and simply bleed-off the over-boost at the top end. Now you have 4000 rpm's of useable boost!
Description: Expertly machined from 6061 aluminum billet, with a type 302 stainless steel spring, and a high-temp solid PTFE valve ball. A high-quality piece that will last for many years. Operating temperature range is -328° to +500° F. Has 7 large outlets - this model moves more than 4x more air than our previous 3/4" BLV model. One BLV will control one very large supercharger or two small ones. Can be polished.
Until now, the only solution for a supercharger install has been to purchase a turbo waste gate and a boost controller switch and modify them for this purpose. Usually about a $400 to $600 investment for these two parts - and then you have to see if you can make them work! The 928 Motorsports BLV is designed for this purpose, and does a better job in a smaller and more compact size than the waste-gate solution for this application.
Pre-Calibrated: When you order, you can tell us what to set the initial calibration to and we will set the BLV to that PSI for you before it ships. Select pressure range from 1-30 psi of adjustment, or 20 to 110 psi. The BLV can be easily adjusted at anytime. No special tools required.
Installation: Simply install in any tube between the supercharger and the MAF or MAP sensor. Usually installed near the BOV. Choose from a steel or aluminum weld bung when ordering. One weld bung is included with your BLV at no charge.
Benefits:
- Bring your boost in earlier without making too much at redline.
- Prevents over-boost, blown gaskets, detonation and engine damage.
- Adds a level of safety for your supercharged motor.
To see all of our Replacement Superchargers Parts and Pulleys, Click Here
To see all of our Supercharger Rebuild Services, Click Here
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