I have a new in box HKS EVC 4. Im guessing I wont need it if i use the biult on PWM boost controller that can piggy back on the RTP? Im also wondering about a few other parts and pieces. Im wondering if with the neptune its beneficial to keep 12,000 gauges or just use the tunerview 2? It can display 4 seperate gauges at once and i will have a wideband. Im not sure if I should use the supplied digital gauge from the wideband or link it into the tunerview and use that to display further cleaning up the cabin area. I knoiw theres quite a bit but these are a few issues i couldnt find a solid answer to online. they are more subject to preference but apparently i have non. thanks for the help. Mike Oh and thanks 89T for the other answers you aree the man!