In our dyno room, we want to be able to subject the engine to various real-world conditions. With our density regulator, Gale can simulate the loss of air density in high altitude conditions like at the top of Pike's Peak. we can even simulate how a subpar "hot air intake" would perform. Watch all of Killing A Duramax here - https://www.youtube.com/playlist?list=PLwtmrqcWzLtQsQGxE-x2i8GaPgEuItUkn ____________________________ Check out all our products at | https://www.bankspower.com