Any support is better then nothing, scanner or editor. Although if I got scanner support it would probably make we want editor support even more, because then I would know what I would want to change. I just looked through a 98 vortec file and my LS1 file. You are right Bill, there are a lot of available parameters for the 98-00 vortecs. I guess half of them (like all the dynamic airflow constants), I wouldn't even touch.