Had a look on a document I got a while ago but couldn't open because of lack of the Japanese word processor. Thought I share the content with you. I don't have any additional information about it, so don't ask me. Has anyone ever seen this unit?

 

From the Apexi site:

The POWER EXCEL program is a powerful network of dealers who have been trained in the sale and use of our POWER FC fuel management system. These dealers have been given exclusive rights to use our FC PRO software to access all the tuning parameters on the POWER FC. They serve as the next level of tuning after the FC COMMANDER. These shops have received personal training from our R&D staff and were selected because of their technical abilities. The training is given to explain the incredible capabilities of the POWER FC as a tool to allow their own tuning abilities to shine. The limited number of shops reflects our commitment to proper training before mass market sales. APEX would like every customer to be able to have a properly tuned car. It is through the POWER EXCEL program that APEX would like to show its dedication to making high end tuning available to as many people as possible.
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Most likely part of their harware that Apexi does not sell to customers.

 

That's actually not the box that Power Excel shops get from Apexi, atleast not from Apexi USA.