I contacted the Chino Hills location today and asked about the chip for my 1995 850 T-5R and was told that they had problems with it and were not offering it and that it would be a significant amount of time before they would. i assume that goes for all 850's. he said that even though they still list it on their website that it is unavailable and that they hope in the future to get it right. Hope this helps. i've done a lot of research on these chips and it keeps coming back to IPD/TME being the best choice. Most expensive yes, but, like Yannis said. you get what you pay for. i'm going to stop looking and just save up for the IPD setup.