[Lakitu]

1. You should still take your car to a tune shop after you buy and flash an off-the-shelf tune after installing a kit

2. You can skip buying an off the shelf and go directly to a shop for the tune (you'd have to tow the car there, I'm assuming)

3. Companies like Delicious and MotoEast are makers of a generic tune map that's not very specific to your car & mods, but good enough to get you to a shop to fine tune it further

4. ECUtek is a device to flash the ECU with a tune map (basically a more fancy OpenFlashTablet)

5. Shops make their own maps in real time specific to your car and use their own ECUtek license, so buying your own is optional if you can get the car to the shop somehow

Thanks