After installing the alc my car definitely shifted harder & faster. It was holding every gear until about 4k before it'd shift. Not the smoothest or best for leaving a neighborhood. I thought on the limited info I could I gathered you really shouldn't know it was there unless you were driving hard. I played around with the harness before work this morning & seemed to have got it acting like it should. Car would shift around 2500k when cruising along but would see the red light come on & seem to hold rpm longer under heavy throttle. I say seemed because it was raining so I couldn't really get on it. I'll see in the morning, fingers crossed.