yep i've seen that vid. impressive stuff.thermalfi'd16 said:There are many factors to consider. But to simply put, given the same boost and tuning on the same engine, a tubular (tru equal lenght) will most likely produce more power. I think Boosted-Hybrid from H-T has a video of a dyno comparison between a log style and their Full-Race (ramhorn) style manifold. It yielded more than 50 whp at the wheels.