Ping "Benny" (aka George) from this forum. He's had this modification on his SP for years now.
I've taken it for a drive and it's smooth as silk throughout the rev range. Where my SP would normally jerk and complain if I flutter the throttle around 3-5k rpm, George's SP will happily hover around that spot all day.
He's also added an electronic boost controller under the dash, allowing him to change the boost from a normal 8psi to 15psi (I think). According to George, this is handy when an HSV or FPV pulls alongside at traffic lights.

According to David (@ Mania), the new Adaptronic is much smaller and a quicker plug and play (piggyback) unit, making it simpler to connect than before. I too am planning to add this improvement to my SP, I'm just saving the dosh.