got to ask ? now with twin turbines and ecu can there be intefearace if they are close to each other ? this twin s seam to be a problem now call reps and ask is there a distance needed also twin rx distance also batt wires close to rx etc you got to ask and ask also jet cat both reps and kingteck one will say this one will say that myself I always get different inputs if its me I will have turbines running have two people know there running have one person get in there car drive to the end of runway use two cell phones keep in contact and run them up to 3/4 power check data taxi back check lines refuel change batts do again