code 93
Yes Code 93 means it has been used on another vehicle and is locked. I have also seen this error code come up one other way. Sometimes if the key is not in the ON position before the start position it will give you that error code.
It depends on what you are doing with the truck bsp915. If you are just looking for power and economy than yes. I would recommend going to Hypertechs website and reading about the difference between the Econ and the Max Energy
The Hypertech programmer will ask you if you have a shift kit and if you do just select yes and it will adjust accordingly. You should be able to use all other features and enjoy the performance