ROM Editor 4 tuning software questions and answers.
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I purchased v3 years ago and have been using it to tune my Civic with a Romulator on an S200 system. Since v3 is no longer supported I was interested in v4. Can I simply upgrade or do I have to purchase it? Also will the bin file change at all when I re-open it with the v4? I read somewhere my 2-step and full throttle shift may require resetting, do I need the clutch switch and set-button still?