Handlebars said:uberdata is an ok program, but ive had problems with the options boxes not staying checked, and even if i do change them, they dont work properly (i had vtec unchecked to use a p28 on an ls motor), but it still threw a vtec solenoid cel. crome has more features, a much better interface, and better support. you can make a ud basemap, but if you actually want to tune, crome is the way to go.
Don't take this the wrong way, but uberdata was superior to crome untill a point. At the moment, crome obviously has more things in it, which also makes it potentially more buggy.
The basic uberdata 1.70 with all the right scripts will tune a basic forced induction or all motor car just fine. It gets a little funky with injectors over 600ccs though.
On your P28 ecu on an LS motor, the code thrown was the VTP, and this can usually be taken away by disabling VTP on either program. For a long time, crome didn't have a working VTP disable.
I support both programs equally. I think for a beginner uberdata is a good program to start with. Crome is starting to get a lot of features, that I feel shouldn't be touched by a beginner, also these additions to the program also make it potentially more buggy. But this is how such programs proceed with development.