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Discussion Starter · #1 ·
I have come across an R33 GTR ECU that has some kind of Jap performance chip in it, it's hard to make out whats on it but looks like:-

H or could be M EC RS80
STI # 7 or could be 9 02

Anyone know what the chip is?
 

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Discussion Starter · #2 ·
Right i now know it's MEC R580 as that matches the ECU Code but does anyone know what the STI#702 means?
 
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