Performance: By using a mechanical valve provided by world reknown Forge Motorsport the BSH Bulletproof DV Kit allows you to quit worrying about your prone to failure factory rubber diaphragm valve and sets you up for the performance driver you desire! By relocating the valve to the front of the motor closest to the throttle body, the BSH Bulletproof DV kit is able to get air in and out of the motor as quickly and efficiently as possible. No longer is air forced to stop at the throttle body and turn around only to go all the way back to the turbo before being vented, no more is air forced to travel the entire length of the intercooler plumbing before entering the motor while in vacuum, with the Bulletproof DV kit, you get performance now! By minimizing the length of vacuum line between the pressure/vacuum source and the DV the Bulletproof DV kit responds faster then any valve on the market. This is great for your turbo's health as the larger volume of air your modified car is flowing can be vented without the chance of stalling your hard working turbocharger.