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Difalco Design "E" Motion and Genesis 30-band controllers include a small Printed Circuit Board (PCB) which plugs into the main PCB. The smaller PCB is a resistor "network" which lets racers fine-tune their controller response to best match a particular motor, track layout and/or personal driving style. For the DD302, DD303 and DD304 controllers which are designed for 1/32 racing, the stock resistor network provides 290 ohms (total) of resistance. Several replacement networks are also available as listed below - the higher the listed ohms, the slower the band response and vice versa. Note that most of these standard networks are designed for 1/24 applications; however, some 1/32 racers prefer the faster response offered by the 180 ohm or 148 ohm network.

• DDxxx (148 Ohms) - Typically used by 1/24 racers running 16D and G12 cars/motors. Pretty fast response for 1/32 racers.
• DD255 (180 Ohms) - Typically used for 1/24 flat track racing, a very good compromise for 1/32 racers.
• DD263 (218 Ohms) - Faster response than the stock resistor network for 1/32 DD302/3/4 HD30 controllers.