opinions on megasquirt ms2 v3

[Ruan]

The issue with Megasquirt really lies with the fact they're an "open" platform... They can be made into a relatively capable ECU, will do all the things you need by simply bolting things on HOWEVER - There's no proper standard to be adhered to and therefore mappers want to steer WELL clear of them, it's often very difficult to prove there's an issue actually with the ECU or Engine - naturally the owner will blame it on the mapper, the mapper will blame it on the ECU...

If you're doing it all DIY - go for it, but don't expect to recieve mappers wanting to map your Megasquirt homebrew system.