ADD W1 Adjustable Blow Off Valve (BOV) Sound Plate Adapter
Upgrade your turbocharged GM truck with the ADD W1 Adjustable Blow Off Valve (BOV) Sound Plate Adapter. Designed to fit between the factory bypass valve and the turbocharger, this adapter vents excess boost pressure to the atmosphere, producing the aggressive "Pshhhh" blow off valve sound without replacing the factory diverter valve.
Unlike standard sound plates, the ADD W1 adapter features 3 adjustable set screws, allowing you to fine-tune both the amount of vented air and the intensity of the blow off sound to match your driving style.
Precision CNC-machined from lightweight 6061 billet aluminum and finished with a durable black anodized coating, this adapter is built for long-lasting performance and a perfect OEM-style fit.
Vehicle Fitment
- 2019+ Chevrolet Silverado 1500 2.7L Turbo
- 2019+ GMC Sierra 1500 2.7L Turbo
- 2023+ Chevrolet Colorado 2.7L Turbo
- 2023+ GMC Canyon 2.7L Turbo
Current supported model years (as of 2026):
- 2019–2026 Chevrolet Silverado 1500 2.7L Turbo
- 2019–2026 GMC Sierra 1500 2.7L Turbo
- 2023–2026 Chevrolet Colorado 2.7L Turbo
- 2023–2026 GMC Canyon 2.7L Turbo
Features
- Adjustable blow off valve sound with 3 tuning set screws
- Fine-tune vented air volume and sound level
- Produces the signature atmospheric "Pshhhh" BOV sound
- CNC-machined from lightweight 6061 billet aluminum
- Black anodized finish for corrosion resistance
- Direct bolt-on installation
- No cutting or permanent modifications required
- Reversible installation
- Limited Lifetime Warranty
Kit Includes
- (1) Adjustable Blow Off Valve Sound Plate Adapter
- (1) O-Ring Seal
- (1) Worm Gear Clamp
- All required installation hardware
- Installation instructions
Note
Blow Off Valve (BOV) is not included. This product is a sound plate adapter designed to work with the factory bypass valve and is intended to increase blow off valve sound only.