I dont know why, but I do know that I had an autologic chip and it was the flattest curve that I have seen around my area. I sent it back, they re-burned it and then it was perfect.
You would think it would be a better idea then the predator for nitrous users too because you can simply flip a switch and you have a new tune. (more fuel,less timing) If your cruising around and you want to hit the NOS and you have the predator, what do you do........Pull over and put a new tune it it??? Ive always thought the chip was a better all around deal.