Actually you will not need it reburned.
You need a new program when changing injectors or turbos or intake air changes quite a bit, such as ported heads, intake etc. even then you can see if you tune to those changes.
Turbo Tweaks description of their 5.7 chip:
Street Chip: for use with pump gas (91-94 octane), and will also work with alcohol injection, but not as aggressive as an alcohol chip. 16-18psi boost in most cases (a little lower with 91oct), WOT fuel will be set up for that boost level, around 18 degrees WOT timing. For the 84/85 hotair cars, typical boost is around 11-14psi. Cars with the 84/85 ECM will NOT have the features of the 86/87 chip.