Ok so heres my experience w/ the ZPC. I have a CM 5.7 SR5 4WD. I installed the 7" BDS w/ 35x12.5 tires. I had noticed some power loss after the lift. I believed it to be the tires because what power I lost seemed about right for the lift and tires. I did not have any dash lights or experience any other issues as mentioned in this thread while driving. I did all I could to make a dash light or reaction from the trucks computer to happen and I did not observe anything. With the truck being brand new w/ 6k miles on it, I was very nervous about shorting a circuit. Rytesyde gave me great advice and w/ much confidence he convinced me to do the ZPC. I used the paper clip method and followed the "skip to step 4" on the above mentioned PDF. All went well and the ZPC was successful on the first try. I hopped in the drivers seat and immediately noticed the difference w/ nannies doing what nannies do. I then de-nannied the truck and WOW! I spun the 35's w/ WOT from a stand still while turning. Yes it was a turn, but I had to let off. Toyo's aren't cheap! Anyway, I could not do that prior to the ZPC. On the highway I observed better pick up and factory like response from the truck. For anyone that is nervous, trust me I understand. But I would recommend the ZPC. Hope this helps anyone with concern about this topic. Thanks again Rytesyde!