Discussion and questions related to the course Reflashing
why you in step4 tuning MAF/Injector Scaling
I'm going to need a little more information to be able to help you. This is simply a logical process of dealing with the required reflashing workflow.
what you need more info
i ask why you tuned MAF and injectors
or you no need answer
Have you watched these modules in the course? It's explained in detail there. If the MAF has been altered or moved, or the intake isn't stock then the MAF scaling will be inaccurate. Likewise if you swap to larger injectors you need to deal with this in the calibration.