i dont think there is any diference.

the electronic one will have "soft" limiters where the cable one wont. that means when you hit your speed limiter instead of going on and off like the cable one it will just stop pulling, it is hard to tell you even hit the limiter because it is soft, just stops pulling.

i think the revlimiter is similar, it will just rev up to a point and stay there, none of that rev,off,rev,off, da da da da sound.

i did have to adjust one extra column in ls1edit so the throttle didn't close at the shifts.

 

electronic is cleaner looking, there is no cable and there is no more cruze control box at all anymore.

 

Parish is right about the soft limiters. They have both, speed and rev limiters. The rev limiter starts pulling throttle before the rev limit though. I had mine set 100rpm befpore the shift point and it would pull throttle.