Sorry, ADHD makes me all off or all on!!! Also keeps me up at night.
Microsquirt can be found at DIY-Autotune,
https://www.diyautotune.com/shop/meg...ed/microsquirt
Functionally same as Megasquirt-2 and all tuning techniques are same. Tonnes of forums and community support for Megasquirt
Converting 300 is extremely easy since you can re-use all sensor and EFI components such as pump, injectors, ignition, etc. Here's some related
https://www.kawiforums.com/ninja-250...on-anyone.html
https://www.ninjette.org/forums/showthread.php?t=54500
Can expect a 10% bump in power with no physical mods from just fine-tuning fuel & ignition maps