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Old 08-10-2003, 08:15 PM   #1
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Default EPROM Confusion

I'm a little confused here. I did some chip swapping today and remembered there were some numbers and words that "scared" me awhile back but I never asked what they meant. The follow picture will explain what I mean...

Heres the Superchip sticker:


Heres the invoice:


The stock EPROM chip sticker has the following part number: "Delco BHDZ 4777"

Now what I'm confused on is what is Caby_M on the chip mean? (also appears on invoice) And also, on the invoice I see the magical word "Supercharged". This is a custom burned chip (or so I'm told) so what effects would a supercharged chip have on my car?...if that is the case.
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Old 08-11-2003, 06:39 PM   #2
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Yeah a lotta bad news recently about them, stylez wasn't to thrilled with his it sounded like...
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Old 08-12-2003, 01:10 AM   #3
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Car pulls more at 4000rpm during steady acceleration. Feels like a shift kit, but I doubt I'm getting 20hp more. I'm gonna call them tomarrow IF I can find the damn time...arg.

I did swap in the AC Delco chip during the weekend for testing and it just seemed...well the car seemed like a damn pansy.
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Old 08-12-2003, 06:12 PM   #4
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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!
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Old 08-12-2003, 06:35 PM   #5
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I wouldn't mind one....
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Old 08-12-2003, 09:36 PM   #6
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Quote:
but they don't really know what they are changing
Oh ya, I am going to run out to get one of those !!! NOT
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Old 08-12-2003, 09:44 PM   #7
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I was looking at my BCM proms today (I just found out that i need a new BCM-ahh$$??) and its so neat the baby blue one Says on the inside "BLUE'', and the dark black one on the inside says "BLACK"
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Old 08-12-2003, 11:25 PM   #8
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Quote:
Quote:
but they don't really know what they are changing


Oh ya, I am going to run out to get one of those !!! NOT
If it works what'* the problem with it? All the chip companies do it then.
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Old 08-13-2003, 01:03 AM   #9
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Yeah all custom performance chips are made that way. They take a stock chip and reconfigure something, test it, reconfigure, test, etc. They cant get down to every 1 and 0...unless you're an engineer from GM whos bored as all hell.
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Old 08-13-2003, 01:35 AM   #10
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Um how much you want for it? I have a very similar car minus NOS ... leme know....
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