I took out ecu fuse if this is what means by resetting ecu? All settings were defaulted after that. Car is still at lexus Carlisle. I'm not sure whether to ask them for scv replacement. I don't understand though, surely they should be able to check whether suction control valve is working or not but instead they are jumping to hypothesis that it might be faulty. Do they Really have to take the whole engine out for installing scv. ?