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Discussion Starter #1
I have a 98 civic DX, it has D16Y7 block with vtec head and it's 5 speed which ECU should i get

P2P A34
P2P A33
P2P A31

what's the difference between them?
 

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for OBD1, the A is the country code (US)... the 2nd number denoted manual (0) or automatic (5) and the last number was something else (model number maybe).

Not sure about OBD2, but I'd guess you'd want to know what denotes manual vs automatic.
 
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