im trying to street tune s300 so i can break in my motor and while in datalogging is shows that im jumping from 1st to 5th gear and says im doing about 30 mph but im actually sitting in the garage in neutral, and my wideband right when i start the car reads about 14-15 and then suddenly leans alll the way out and reads nothing untill i hit the gas it will jump back to about 16. any ideas would help alot thanks

 

my guess is your running lean..........

 

good guess