I've got one of the later model Whipples so it came with the "upgraded" piggyback ECU. As I said, it has( knock on wood) performed perfectly for four and a half years now, although you can't even think about using regular gas. I was just interested to see if anyone had managed to increase the boost. Unfortunately, Whipple is not a very customer responsive organization, even back when they were still sellling the PT superchargers. But then again the combination of the supercharger and the five speed does make it fun to drive
