Those looking to make big power in competition-level forced induction cars can benefit from the slightest modifications to give them that edge. When you have removed your filters, MAFS, piping and anything else that is connected to that monster single turbo, a Turbo Horn is a great addition. By sliding the horn over the compressor inlet, this stamped aluminum piece flares from 4-inches to 8-inches around the tip. The theory behind this piece is that, the velocity stack inspired design funnels in air from a larger area and creates a venture effect by speeding up as it rounds the radius into the inlet. The end result? More volume of air at a faster velocity, two essentials for gaining the most possible power.