"The stock Tee for the single pop is extremely restrictive because both sides are pulling from the same place in the center of the Tee.....Because they are pulling from the center of the Tee they are pulling from each other and causing a fairly large intake restriction. Separating the two sides into a dual pop allows the turbo to pull air much more freely and the turbo moves more air and makes more power. Yes, A stock turbo car greatly benefits from a dual pop! We have done dyno tests before and after on several stock turbo cars and the gain is about 20 RWHP on average at full power with race fuel."
