Not no good, just got alot of restrictions. Personally not fond of airflow system. Forgot to mention that you will to balance each intake port adapter with balancing valve, it will make it easier to idle.
Cipan will make a good adapter for you guys, since he is a Mitsubishi specialise.
If i were to do the 4 throttle for Mitsubishi engine, i think i will be charging about RM 4,000- 5000 because i will remove airflow system and use a standalone ecu.