Do I need an EFIE or a MAP Enhancer? 99 Honda Civic

by Dan
(Vancouver Washington)

I have a 1999 Honda Civic DX (D16y7 engine 1.6L), multi-port fuel injection.

Do I need an EFIE to modify the voltage coming from the o2 sensors off the exhaust to the computer, or do I need to modify the voltage coming from the MAP sensor to the computer?

I am confused about when could effectively lean out the mixture to where it should be after installing an HHO system.

Thanks!

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Do I need an EFIE or a MAP Enhancer? 99 Honda Civic

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Hydrogen Water Cars
by: Response From

Hi,
Yes, I would install both. I believe the EFIE you will need is a wide band for your upstream and a single narrow band for your downstream. You didn't tell me engine size, was it bought in California?

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