This is a 4-throttle sports injection with one throttle per cylinder. The sports injection, which has the characteristic of revving up from low speed to high revolutions, is compatible with B-type, K-type, and F-type VTEC engines, and accelerates with good response while producing a high-pitched intake sound like a racing engine. It is controlled by a dedicated ECU (full computer). It is a special tuning part that meets vehicle inspection standards.
It is introduced on Ameblo's "M&M HONDA's Honda Honki."
https://ameblo.jp/mandm-honda/entry-12052147898.html