naw...
a. HPS tubes are much less $ and made in USA. (although mishimoto is a fake j-name are these made in the USA as well? they're in delaware or something). i use the HPS post MAF tubes and they work great.
b. mishimoto's intake they did for the 370Z did not net results people were looking for.
so i suppose those 2 reasons... maybe they can put out some real numbers these tubes make and match market price.