Haltech Turbosmart GenV eWG45 Hypergate 45 Diameter: 45mm

There are no springs, no hoses and no boost reference signal, nor any of the limitations associated with any of them. Gone are 'Minimum' boost levels associated with base spring pressure or the heat related issues with hoses. If your manifold priority is good enough, you can set your boost anywhere from zero up to 'All of it' - All from your laptop or tuning interface.