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Message: [QUOTE="Isobaric, post: 1237882, member: 18078"] Coming from an OEM's perspective, the amount of money, resources and man-hours it takes to put a calibration to market is staggering. We are talking hundreds of millions of dollars annually. For that reason, my hat is off to the folks finding 'back-doors' in the software that will allow a truck to do as much as idle properly with the emissions deleted. These are puzzles that PhD level engineers have spent months analyzing, calibrating, testing and re-calibrating...all with a clear understanding of how the system is designed. The complexity of models involved in making a modern engine operate has increased exponentially since 2003. The amount of closed loop systems (where each sensor/actuator acts as an input to the arbitration of another sensor/actuator) would give you nightmares. To put things into perspective...something as seemingly insignificant as idle gains (controls fueling characteristics at idle) is so complex that it takes hundreds of pages to map out the logic flow. These are provided to an OEM calibration engineer. Unless FoMoCo has a massive internal leak (think Edward Snowden), they are not, and will not be available to aftermarket tuners. Just breaking the encryption to the memory regions of an ECU where calibration data is stored is a job...and then all you have are 1's and 0's. An engine brake calibration is not simply "slam the VGT shut and let that f*cker eat". There are feedback loops in place to optimize performance and prevent catastrophic engine failure , which are not easily fooled. My guess is that Ford linearized their EGR/VGT calibration, which is giving the aftermarket tuners fits. I apologize if this comes off as preaching, but the "I want it, and I want it now!" attitude is foolish. Ford's team started working on the 2015 calibration years ago. The aftermarket guys have had less than half the time, and a fraction of the operating budget. Be impressed that they are as far along as they are. Don't like it? Buy a CAN emulator and give it a shot. I think you'll be surprised. [/QUOTE]