is hp tuner the only on out there u can use to  set this cars up  i have a performance shop that wants 300 to flash my car  but looking at can buy the hp for 500 and beable do it my self but was wanting know if there any other program  cheaper i dont have a lot cash to blow  and  do you know how much can increase the  power on a stock motor
 
Bone stock you could get about 8whp increase which is pretty decent.
EFI Live also supports J's, but HPTuners is the main one/preferred one.
If you do not know tuning I would not even think about getting HPT your self.
FU Tuning