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ok, probably very n00b ?? about ECU
https://www.thejdm.com/forum/viewtopic.php?f=46&t=1060
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Author:  symmetry [ December 30, 2003 ]
Post subject:  ok, probably very n00b ?? about ECU

will the ecu from an '02 Si work in an '02 ex?
Author:  symmetry [ December 30, 2003 ]
Post subject: 

ok, yeah, I do realize that there is a totally dif engine size but I'm just curious what the other diffs might be if anyone knows
Author:  munster [ December 30, 2003 ]
Post subject: 

Why do you want to swap that ecu into an ex?

Ex doesn't have a knock sensor. Si does.
Author:  symmetry [ December 31, 2003 ]
Post subject: 

well for now just for curiousity reasons but things like maybe a higher rev, better i-vtec response etc.
Author:  munster [ December 31, 2003 ]
Post subject: 

Look into a vtec controller, etc. You're probably going to run into some problems with obd issues. I haven't messed with any of the newer civics so I don't know off hand. There's alot of EM/EP guys/girls on here that could probably guide you in the right direction.
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