5.7 you are absolutley right about the computer. Watever has been disconnected from it that has nothing to do with it or does not matter. Like you say it is not as finicky when it comes to those items. The Predator is sort of a piggy back system that taps into it and is able to make changes on the motor and the tranny. As in my case the cam is bigger than the normal and the vacum is less and it can be controlled by the Predator. Many other parameters can be changed. If it would finally come inn I would be able to show you how it works. As a Matter of fact I might just record it and post it on a video as I program the car. Hey that really sounds like a good Idea. More **** for you guys!!!!!!!