So I've been trying to troubleshoot the erratic idle on my Brutale 1078 when the fans turn on. Idle is steady with fans off. Already did the usual fixes,(tps reset, idle trim, new plugs, dyno tune, etc.) and it didn't solve the problem. So my mechanic and I were checking all the parameters on VDSTS to make sure everything was in spec and we noticed that when the fans turn on the idle gets erratic and the lambda sensor column shows anywhere from 4 to 8 mv and goes back to 0 when the fans turn off and idle stabilizes. We watched it for a few cycles to confirm and it did the same thing over and over. I have a race ECU and vdsts confirms open loop. So lambda should be disabled, and it is, only till fans kick on and registers a millivolt/s. Any ideas why? Right now I have the lambda sensor off the bike and taped off at the quick disconnect. No error codes either. Please help.