Go Fast Bits - GFB Respons TMS Mach 2 Blow Off Valve/Diverter

• Adjust how loud the blow-off sound is. Recirculate all of the air for silent factory operation, vent it all to atmosphere for maximum noise, or set it ANYWHERE in between to suit your preference.

• Get a blow-off sound WITHOUT causing stalling, backfiring, or any other BOV-related issues, even on a car with a sensitive airflow meter (MAF).

• Faster throttle response

• 30% quicker boost

• Faster boost recovery on gearshift

• Unlimited boost-holding!

• OPTIONAL Whistling Trumpet New 5072 design (+$39.95)