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Discussion Starter #1
I am trying to determine which chip is which. I have a Stock chip and a JimC chip sitting in front of me. One has nothing written on the top. Just a has a silver rectangle sticker. The other one has the number 1 267 356 412 written on a silver sticker and has the following numbers written on the chip itself. B57604 S7804 U9430022s 1983.
I am interested in knowing because I was under the impression that my car came with the JimC chip installed when I bought the car, but I have a feeling it was the other way around.
Thanks,
David
 

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I would say the stock chip is the one with the numbers on it. I have a Dinan chip installed by previous owner so I have the original chip in a plastic holder the numbers on my chip read:1 267 356 335 with
B57604
S7804
U949021MS
1983
The opposite side has :
7934155NBD
PHILLIPPINES QZ 44

Hope that helps
 

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My stock chip has this lot printed on top.

1 267 356 412 on a silver sticker

no other id marks apart from the eprom mfr's numbers

Car is a 3.6l 1991
 

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Discussion Starter #4
Thanks
Now I am able to confirm my suspicsion. When I bought the car, I thought the car already had the JimC chip in it. Then I put in what I thought was my stock chip. Now I know it was the other way around. This makes sense as I hit my topspeed limiter when I thought I didn't have one, but I swear I have seen ~7500 on the tach with my stock chip, atleast more than 7250.
David
 
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