I've been looking at either getting something to log/tune my gst. I've been reading up on DSMLink, looks great but I won't have the money for that for a long while. But, I've been reading about using a 98-99 ecu 'black case' and open port 2.0 cable. With either evo scan or other free tuning programs you can tune/flash the ecu and log, its about 10th the cost.

Basically the question is:
Which would be better for a complete idiot when it comes to tuning a car?

For reference about the 98-99 ecu flashing:

CeddyMod v1 (EcuFlash) - DSM Forums

MHIScan: New free DataLogger for DSMs - DSM Forums