Need some advice on data tracing with emulation with WBO2 on EGR A/D input of 7427 ECM. Beside having the VE table on screen, is it appropriate to have the AFR history table on the screen at the same time such that VE table values can be changed to achieve desired AFR? What two items need to be shown on the Tunerpro screen to accomplish AFR tuning? Please advise. Thanks.