When you think about it, the design is allowing the air to flow out as a single 3" exhaust like the Ti-C did, based on how the pipe is designed. while the other side is added onto that pipe, not split into a Y like most. the forced Y is what probably what causes a restriction, where as this set up probably flows pretty close to a single 3" would. it looks weird having smoke only come out of one side, but the exhaust itself looks excellent. definitely improves the sound of the EL headers too. I hope you'll be keeping this exhaust for a while, lol.