GFB softer spring for Mach 2, Respons and Deceptor Pro II valves

The softer spring fits all Mach 2, Respons TMS and Deceptor Pro II valves.

This softer spring is fitted as standard in all Mach 2 valves that are fully recirculated back into the intake system. It can also be fitted to all Respons TMS and Deceptor Pro valves, but should only be used when the valve is fully recirculated back into the intake system and/or engine vacuum at idle is less than 19″ Hg.

If the valve is used to vent air to the atmosphere and engine vacuum at idle is greater than 19″ Hg, use the standard 6115 spring.

Suitable for: universal use (not vehicle-specific).