Hypertech Tuner
 

Anybody use one of them on an LT1, are they worth it, can I use someone else's on my 94 Z28?

handheld tuners are junk. they are jsut crappy little generic programs that change one or two things and don't add any real power or help the car run better.
if you have a cheap laptop around or know where tofind one, do yourself the favor of buying one of the tuning programs available.
our sponsor, HPTuners, does not currently support LT1 cars, but hopefully that will be corrected sometime soon.
there are companies like EFI Live, LT1Edit, and Tunercat that support the late OBD1 computers.

awesome, thank you yet again.