honda use low ohm inj. 2-3 ohm's the inj. on the mitsuishi turbo inj. is 2-3 ohm's the non tubro is 16-18 ohm's. That is the reason for the res.pack for ecu. It's not needed for the Honda because it is rated for the same ohm's. Check on some of the honda web site and you will find that it is not needed.