ECU question
#1
ECU question
I got a 93 civic hatchback and im putting a 90 LS into it and the mechanic said i could still use the 93 ECU and was wondering if thats true and will the car run right
#2
Honda-Tech Member
Re: ECU question
Technically you can, but it's not a good idea to do it for a long time. The fuel and ignition timing maps will be for the SOHC 1.5 or 1.6L engine, and you'll be running a 1.8L DOHC engine, so the maps will be completely wrong. Eventually you will damage the engine, from running so lean (among other things). You should find a '92-'93 LS ECU, since it's such a similar engine and it's OBD1 so it will plug right into your car. Or get your stock ECU chipped with the base map for your new engine.
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