I am writing this thread not to flame HPT but to bring up a trend that I have noticed within the last 6-9 months.
I had been using HPT happily to tune my old blown C5 without issue for some time and through the forum's help grew my tuning knowledge exponentially. My discontent started while tuning my '05 vette that I purchased last December. I have run across three things do not work: AC disable via TPS/RPM, DFCO and O2 switchpoints. Whether these things do not work because of bugs in the GM OS or bugs in the HPT Editor program I don't know but they show up in the editor as parameters to change and based on that I assume that the parameters do what they say. When things don't work in the editor it makes me doubt if other things are really working that are not easily verified. The above mentioned things are not huge problems although I would like to have all of them work. I realize that there are other features and bug fixes that trump these issues and I have been patiently awaiting 2.1.20 to see if any of these fixes are implemented. Furthermore I realize that there are still unknown things about the Gen Iv PCMs. Lastly I realize that HPT is working hard on getting Ford support production ready in 2.1.20 and are in beta for Dodge. I don't fault them for expanding their product line, not one bit. To my knowledge HPT will be the first software of it's kind to tune Ford and Dodge directly like we do now on GM and I applaud them for that. Us GM guys are feeling a bit ignored though and it seems like HPT is spreading themselves too thin. When bugfixes and features are requested the standard reply is that there are hundreds of cal's that need to be updated and tested but adding Ford and Dodge support will only increase this problem and then HPT will be hearing complaints from three times the customer base with that many more cal's that need updating. It seems like HPT is in that phase where they are still a relatively small company that is growing too fast to control. Even with the addition of Ford and Dodge and all the other GM PCM's that have been or are being added my perception is that it's still only Chris, Keith and Bill knocking things out (forgive me if I've left anyone out). It just seems like too much to handle. EFI Live is clearly pulling ahead in the GM space. They have more editable parameters, a virtual Gen 4 VE table and autotune. I have no intention of jumping ship but I think unless some things change, HPT's GM customer base/marketshare will slip. The additonal Ford customers will more than make up for this and maybe thats the business decision that has been made but I would like to suggest expanding to keep up with the demand rather than letting things slide.