I was under the impression that it's faster to just let the transmission find a gear, but a lot of times I'll punch it from a roll (say 50 mph) and the car just stays in a higher gear it seems and the RPM needle moves like a slug. Then other times it pulls like a train from a roll. I can only assume this is the brain of the transmission. The ZF masterpiece in a lot of cars right now doesn't have this issue. It ALWAYS finds the right gear, and very quickly. I wish there was a way for the JB4 to control shifts (or is there and I'm missing it?). This transmission is well built apparently in terms of durability, but it's also dumb it seems. Basically the transmission is an NFL offensive lineman, the ZF is a trained assassin. Is it faster to take control of the shifts instead all of the time?