Read the comparison of Schumacher's (which blow away stock manifolds) vs. TTI's.
Almost a 1/2 second in the quarter difference in the same car with a mild build.
It take a hell of a lot more than 15 hp to make a change like that.
My car really woke up when I went to TTi's from the schumachers.
In regards to the whole low end BS. I call BS. More often than not you'll see an increase across the range. Been there done that with the whole intake comparisons.