Aeromotive regulators beat the competition with the best of all worlds: Outstanding, consistent performance from equipment that’s built to last. Aeromotive delivers more flow than similar regulators thanks to a custom, convoluted diaphragm that maximizes piston stroke while minimizing stress. Every model uses a poppet designed specifically for that regulator, and a diaphragm fabricated from a proprietary elastomer material. The standard vacuum boost port delivers perfect 1:1 boost reference and makes these regulators ideal for turbo-charged and supercharged engines.