when you have the BE program open up the MAF transfer function and look at the top of the MAF transfer where the import export buttons are , one of those buttons is the autotune feature , if you just click it , it will use the factory 02s to adjust the MAF transfer , this will do OK , but if you really want to dial it in you can reconfigure the EGR postion sensor transfer function under the hardware configuration and run your analog output of your wideband to the EGR position wire to the ECM and it will then log the wideband data and you can run the autotune function off the wideband data and it will more accurately and faster adjust the MAF transfer for you ......