Who’s got Hondata Reflash?

Hello people, since I’ve been getting apart more and more recently with the tuning by “chip” I had to find out that the reflash of hondata is probably the smartest variant of all possibilities in things v-tec point, redline, reading and price. Since I’m not the best English reader and understander and therefore on the internet side of hondata not much understood here a few questions to reflash user: -Can I really use the oiriginal valve springs at 8600/min? -Reicht the hondata mod. with k&n exchange filter as intake off? -Will my ecu be installed in exchange with the “reflashed” ecu and this for the next customer at hondata “flashed”? -How does the reflash go in everyday life, what else is there to know about it?