Q: I think to buy pcmtuner and i don’t now better pcm tuner or ktag?
A:
They are different tools – pcm works mostly via obd, ktag only bench or bdm.
Pcmtuner does boot also and bench and obd, ktag is just boot / bdm.
Get both .and a full jtag kit for ktag. ktag is user friendly for novices. pcmtuner hardware can be used with other programs as well.