oK I AM TRING TO READ OR PROGRAM PCM WITH TUNER CAT IT GETS ABOUT 3/4 ON THE BLUE BAR PROGRESS THEN SAYS INVALID RESPONSE FROM PCM NOW I BOUGHT USED COMPUTER THAT WAS PROGRAMED FROM PCMFORLESS.COM BUT IT WAS USED IT RUNS CAR AND I CAN USED DATAMASTER AND LOG BUT CAN'T READ OR PROGRAM COULD IT BE COMPUTER OR IS THERE SOME LOCK THAT PCMFORLESS STICKS IN SOFTWARE ON FLASH MEMORY

 

Might want to mention the specifics of the PCM you are trying to program.... year and engine in particular.

 

1993 camaro with 1994 ecm and wire conversion flashable computer well supposed to be lol
ryan

 

got different cable got rid of dumb usb cable and went to serial port works perfect