I had a nice 20 minute phone conversation with a Superchips rep today and boy did I learn a lot...
To get any chip made they must know your 4 digit code that is located on the memcal. Well each code desinates what type of chip they start with, but heres the interesting part. The code is a bunch of 1'* and 0'* and no one can really make sense of it unless you're a GM engineer who has a lot of time on his/her hands. Anyway what Superchips does is put the chip on the dyno and basically multiply particular factors this way that way to get the best possible performance, but they don't really know what they are changing. Such as they cant set something to 30^, 62^, 70^, etc...but they do see the results of what is being multiplied. That way the keep test and tuning for best performance.
Heres something else that shocked me. They lean out the mixture at ... I think he said 3/4 throttle ... because from the factory GM cars ran rich. Now I said "Well I'm running nitrous so a lean mixture is not a good idea for me." And thats when he agreed and directed to me fastchips for a custom made nitrous chip.
Anyway back to more... the timing is advanced on all chips the most they possibly can, again for maximum performance. Now what I did confirm was that with my particular chip code (BHDZ) the top speed limiter is not eliminated. But they never remove it he said, they raise it 20-30%. And the rev limiter, they only raise slighty because of the possibility of blowing an engine (duh!).
Also I found out what CABY_M on my chip means. Its an updated code from GM based off the old BHDZ code. So maybe that was a bad transmission shift they solved, or a slight miss at a particular rpm, who knows...but its improved.
Also, they stopped custom burning on pre 95 GM'* (roughly) when the templates were changed. Why? Because most newer codes are similar and will work for a variety of vehicals with slight changes, which obviously reduces headache and cost. There was a lot more to it but I can't remember. All in all it made perfect sense at the time.
In the end I found out my chip is updated and improved code that has been modified for better performance. But what now you say? I'm calling Fastchips on a custom nitrous chip!