Ok so I was out logging the car and I decided to get the info from the 2 3rd gear pulls I did and compare them on Virtual Dyno and they differ by alot but I did this in the same day so I dont understand why it would differ this much. Does anyone have any exp with using Virtual Dyno, if so maybe you can explain why the two pulls have a 17 hp difference. btw my mods are gm stg 2 with custom tune from james and cai,full exhaust, dual pass. I know james did some math the day he did it for me and said I should expect anywhere from 255 to 265 with my setup. also my MAF lb/min was 30.233