Re: Hmm..
K/N doesnt make a kit for the northstar..... And I even debate its effectiveness, even if they did make one...... If you must, just upgrade the panel (they make one that fits close, do a search, its been mentioned)......
OBDI is the 1st generation of On Board Diagnostics....... And, OBDII, is, well, you get the idea......
Anyway, from the factory, they design the cars to run with premium, but WILL run with regular...... By changing certain paramters (dont know the science behind it), they can produce more power......... They also change things like air/fuel mix, timing, and other things like that.......