Features: Comes with mounting hardware and toggle switch. Double stage boosts adjustments for low and high boosts. One way t-valves. Better control for boosts spikes than manual controllers. Increase fast boosts response with two adjustable boosts levels. Toggle between high and low boosts on the fly. Both high and low boosts settings are fully adjustable. Manufactured from high-grade billet aluminium, it allows for accurate and simple tuning of boosts pressure. This double stage boosts control valves range is good for mildly modified turbocharged engine s and perfect for increasing boosts levels on factory turbocharged engines. Reduce turbines lag. Reducing turbocharging can improve the speed response by 900rpm in advance within the speed range. Reduce the creep of wastegates, turbocharge faster, and the gating system can increase the speed faster. Specifications: Component:Metal Color:Black Size:Approx.78x53.2x24.5mm/3.07x2.09x0.98inch Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. 3.Professional installation is highly recommended! Thanks for your understandings. Package includes: 1 Set Electronic Boosts Controller