GFB Spares- GFB-6115 Standard Spring

🔧 Product Description

The  GFB-6115 Standard Spring is a genuine replacement and tuning component designed for Go Fast Bits Respons TMS, Deceptor Pro II, and Mach 2 blow-off valves. This spring is supplied as standard in Respons TMS and Deceptor Pro II valves and is commonly used when configuring Mach 2 valves for atmosphere venting setups.

Engineered for precise valve control, the 6115 spring ensures optimal opening and closing characteristics based on engine vacuum conditions, helping maintain consistent boost response and drivability.

⚙️ Key Features

• Genuine GFB replacement spring (Part No. 6115)
• Standard spring supplied in Respons TMS & Deceptor Pro II valves
• Optional upgrade for Mach 2 valves (atmosphere setup)
• Designed for accurate valve actuation and control
• Durable construction for long-term performance

🚗 Fitment

• GFB Respons TMS Blow-Off Valves
• GFB Deceptor Pro II Blow-Off Valves
• GFB Mach 2 Valves (when configured for atmosphere venting)
• Universal within compatible GFB valve platforms

🏁 Performance Benefits

• Maintains stable idle and clean valve operation
• Ensures correct venting response under throttle lift
• Helps prevent flutter, stalling, or inconsistent boost release
• Optimised for high vacuum atmosphere vent setups

📊 Spring Selection Guide

Choosing the correct spring is critical for proper valve performance:

• ✅ Use GFB-6115 (Standard Spring) when:
  • Running atmosphere venting
  • Engine idle vacuum is greater than 19”Hg
• 🔁 Use softer spring (6116) when:
  • Running full recirculation (plumb-back)
  • Engine idle vacuum is less than 19”Hg

This ensures the valve opens and closes correctly without causing drivability issues or boost loss

🔩 Specifications

• Part Number: 6115
• Product Type: Blow-off valve spring
• Application: Atmosphere venting setups
• Material: High-quality spring steel
• Brand: Go Fast Bits (GFB)

🛠️ Installation Notes

• Direct replacement or upgrade
• No special tools required
• Always match spring to vacuum setup
• Incorrect spring choice may cause poor idle or valve response

💡 Why This Spring Matters

The spring inside your BOV controls how quickly and how long the valve opens when you lift off throttle. GFB specifically designs their springs to match different vacuum conditions rather than boost pressure, ensuring consistent and reliable operation

🏆 Perfect For

• Atmosphere venting setups
• Performance turbo builds
• BOV tuning and optimisation
• Replacement of worn or incorrect springs

✅ Summary

The GFB-6115 Standard Spring is the correct choice for high vacuum, atmosphere venting applications, delivering reliable valve performance and consistent boost response. If you’re tuning or servicing your GFB BOV, this spring is essential for getting the setup right.