First of all I did a search and did not find what I was looking for, Right now I'm having my lap top fixed and the only way I can log is through the black box logging feature, I want to know what the minimum scan rate I should use to set up the black box for while logging data for the Auto VE procedure? The reason why I ask is that I want to lengthen my black box logging time as long as possible without losing any important information that I may loose from a slower scan time, or I was also wondering if I may take multiple scanned logs and combine the information somehow so that I may for say take 20min from one day, 25 min from another day and so on and combine all the information at the same time into my auto VE Histogram? That seems it would be so much easier than driving for say an hour or more trying to get a 50 count per cell or more, especially when you have no where you need to go but you need to develop a VE table. Thanx in advance.