* It's a misinterpretation or misspelling: Double-check the information source.
* It's a specific model or trim level: It could be a dealer-specific or regional designation that isn't widely known.
* It's related to a particular engine: "V6 3000" likely refers to a 3.0L V6 engine, but "ECI-MULTI" could be a Mitsubishi-specific term for their engine control system or fuel injection technology.
To find out what "ECI-MULTI V6 3000" actually means, you'll need to provide more context:
* What car model: What specific Mitsubishi car are you referring to?
* Where did you see this term: What document, website, or advertisement did you find this information?
With more context, I can help you understand the meaning of this term.
