[gost]

I did speak with him and actually bought the 91 chip. Major difference in the low and mid range, it's really nice there but I did not notice much if anything on the high end above 4.5K He said the 93 chip provides a bit better throttle response and about 3 additional ponies on the high end which you really wouldn't notice that much. With the 93 chip you must use 93 and at a minimum 92 octane fuel but the 91 you can use higher if you want. I guess it's the availability of 93 in your area and your concern for the cost of petrol these day's that dictate which chip you get, unless you track your car then of course it's 93 all the way. Also if you drive in a hot weather area then the 91 would be a better bet. I mentioned to Steve about the lack of additional kick above 4.5K and he attributes that to the power coming on now much lower in the range, which I do agree, it's very noticeable, so the transition from mid to hi range is much smoother and not as much of a kick is experienced but he guarantees that there's at least 10 more ponies up there than before. I can see his point. I was just basing my feedback on previous posts on this site and on his website where many users stated that they noticed this nice kick on the high end so that's what I was looking for. Although I do not know the condition of their cars and how it ran before their chip install. Steve's a good guy and want's his customers to be happy, I sincerely believe this and as always has offered to swap my 91 out for a 93 whenever I want which is totally cool!
Any other experiences/advice out there?