I'd recommend flashing back to stock before you switch tuners. Not a bad idea to check with Hondata but any time you want to switch tuning software i'd recommend to flash back to stock and make sure you properly remove the device from the car and avoid any possiblity where two tuners could cause any sort of interference with eachother.Hey all, I was wondering if my car was reflashed with a Hondata stage 2. Would I be able to install a recently purchased Flashpro or do I have to remove the old tune before install.