Stage 1 chipped p28?
 

How can I determin what's been done to this swap I just got. its naturally asperated and has stage 1 chipped ecu would like to find out what's been altered on this swap b4 install into my car

are you asking how to tell what kind of tune is on the p28? we would have no idea. Your best bet would be to find a local tuner and talk to them. hey might be able to tell you either, but they would be able to retune most likely (depending on the chip in it)

Or are you asking what's been done to the motor? again, we wouldn't be able to tell you unless you open up the motor and look at the camshafts/pistons. Most everything else can be see by opening the hood.