2009 honda civic lx ecu programming compatiblity

Hondata model coverage & ECU application questions.
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krazyeddie
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Joined: Mon Mar 02, 2026 2:00 pm

2009 honda civic lx ecu programming compatiblity

Post by krazyeddie »

Hey all i have a 2009 honda civic lx and recently did a jdm engine swap due to blown engine and got the same one but reluctor pattern differed so i got a matching ecu which i believe is for a 2011 civic lx, only problem is i need to turn off the immobilizer, other tuners can’t do it and suggest i need either a ktuner or hondata flash pro, after looking ktuner doesnt support my car and was wondering if a hondata product would work. i’ll give both the original ecu part number and the new japanese one because the tuner said he switched the japanese ecu to the original ones number so i could pass emissions if i got it to work, the original ecu number is 37820-RNA-A75, and the new japanese ecu part number is 37820-RWK-J52, if anyone knows if it will work with hondata or if they’ll work with another tuning software please let me know, thank you
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Spunkster
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Joined: Fri Sep 20, 2002 5:06 pm
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Re: 2009 honda civic lx ecu programming compatiblity

Post by Spunkster »

What exactly was different between the engines?

What were the engine part numbers?
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