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You bought yourself a shiny new (or new-to-you) tenth generation Honda Civic or Accord, and you're looking to modify it. Great! What's the best bang for the buck modification you can do? Tuning, of course.
These cars are a ton more fun with a tune. That being said, you have options when it comes to reflashing the factory ECU. Over the course of the last couple years, I've had the opportunity to get very well-acquainted with these options. Let's get right to the pro's and con's of the popular reflash options.
Once more, this post is the culmination of experience amassed from the literal thousands of 10th Gen Civic and Accords I've had a hand in tuning (custom tunes, off the shelf tunes, and several starting calibrations I've aided in developing for numerous companies that focus on these vehicles), and there's nothing I'd like more than to see the "disadvantages" for all mentioned to be addressed by their respective manufacturers. I tune Hondata and KTuner products both every single day, and want people to make informed decisions based on facts, not just based on bandwagon tactics or social media "influencers".