I remember reading that on the H&S forum a few years back. This is what happened, they stopped all production of all tuners, down-loaders, for dpf removal, which we all know this. They put a stop to all production , whatever they had in the warehouse from what the HS tech said, and sold them all, when the 3rd parties found out about the situation they took advantage of that and doubled the price. They just came up with a pretty name Street tuner, and high sulfur unlock being emissions removal. Use to before you updated it would show MILD, WILD, and HOT. Which is what I still have, new updates would show, STREET, PERFORMANCE, blah, blah. I thought after reading that press release from H&S, that they were going to focus on emissions tuning only. Well that was never the case. When that press release came out, they stop production right then. If you were using your truck for off road use and send the necessary paperwork from the EPA H&S would send you the unlock code. Or if you lived in a foreign country that was ok with removal of emissions they would send you the unlock code. Now the information I received was from others, at the H&S forum. So the down-loaders, and tuners that are still out their are from 2 years ago, rather it was a street tuner, Sulfur unlocked, or off road tuning. But they were still offering warranties, technical support at that time. They were still offering technical support up until they received that hefty fine. So with the combination of not selling tuners, and down-loaders for 2 years with no sales, and the fine from CARB of the state of California, and with the EPA on their ass. They closed technical support completely! They have nothing to do or say for the tuners, and down-loaders still out their. They now go by strictly HS Motorsports selling turbos, calibrations, fuel systems, and so on.