Sorry Mike, I love Jim to death, but I disagree. I had a slight pause when I mashed the throttle before as I don't always bring up the rpms when drag racing. Depends on the track prep. If she is sticky, then I will bring the throttle up to 1500-1800 rpms brake torquing, which means the SB isn't really helping much. But, on a track which is not prep'd as well, I will just put her to floor and go without brake torquing. Definitely worth it to me for the street. No lag at all...no hesitation, but my last one on the blue coupe is much touchier than the roadster's. I don't have selectable one's because I want to go fast all the time...lol...