Hallman Pro RX manual boost controller -4an or barb
Hallman Pro RX manual boost controller in Black. Features ceramic ball, 2x springs for light or heavy boost, mounting bracket, 3ft of vacuum line, zipties and instructions.
Available with -4an fittings or standard hose barb.
Easiest way to increase the performance of your Turbocharged vehicle. Gets rid of the laggy onset of boost that occurs when running a car on wastegate spring pressure.