not sure that I could have hit those numbers in the VMax. Pretty sure the Callaway will, maybe even did, but I don't have a garmin and the speedo topped out at 120 so I'm not real sure what I hit. I know the tach was still climbing steadily...I bought my wife a nice tom tom for Christmas, but we've never had it out of the box, so I'm not sure if it has features like that. My superchips was cool because I could log zero to 10, 20, 30 etc. as well as 1/4 mile times. Probably should have kept it for those things. Oh well. I get more looks than questions. All of the Silverado badging is now Callaway, and most don't know what it is. I guess I like it that way