So iv heard from multiple shops that i must have the fi light off for the pc3 usb to accept the tune... (because its in dealer "limp" mode) Anyone experience this yet? My bike is fully modded but I have no servo motor, and my valve cover has block off plates. Im scheduled for a dyno day at mammoth motorsports in central cali, they are a certified dynojet shop, but i dont wanna drive there just to turn around and go home... - the dyno tech rides and tunes 954's

I need advice- thanks