Can I modify a 2012 Honda Civic LX ECON?

I recently bought a 2012 Honda Civic LX ECON as my first car. I m really into JDM/Stanced Cars, but also in saving gas. I ve owned the car for a good 6 months and in really thinking about customizing it to my likes. I m thinking about dropping it low and adding a body kit to it. I also would love to add an exhaust and intake to it as well, but I m not sure is the ECON feature would get in the way of my engine mods. Enough explaining the question I want answers to is…

CAN I TUNE MY ENGINE UP OR WILL THE ECON HOLD ME BACK FROM MODS EXCEPT FOR THE EXTERIORS MODS?

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