The MMD i-Color is essentially the SBC i-Color without the ability to control or view boost. This unit will come with only the Color display and secondary harness. The user will still be able to view speed, rpm, power, etc. Another benefit of the MMD is that if you already own an SBC i-D boost controller this unit can be purchased and plugged directly in the the boost brain converting the SBC i-D into the SBC i-Color. Equation: MMD i-Color + SBC i-D = SBC i-Color.