If you search for quad tunes and stuff it will tell you what all the parameters are. I believe if you turn the mins down a lil it will help with the surging. I have mine on like 25 or 30 and its not as bad as it was. But i just turn the chip down when im cruising. Hope this helps.
Go to the new share site that was generated for the quadzilla via jigabop
There complete instructions in .pdf that explain how to download driver for your box I was having the same exact problems and got it to work the instructions are for windows 7 and vista