I've been surfing and searching for tuning options for my supercharged Miata. I was considering the SAFC2 and later the Greddy EMU.. Now i find this really interesting stuff and it's all apparently designed around the DSM cars, specially the 4G63...
Check this out: http://www.diyautotune.com/
Here is more about the megasquirt... Looks very interesting, and very inexpensive as well..... http://www.megasquirt.info/

it's a fuel injector driver :\ ti's like a greddy emanage from what it looks like. i never liked the idea of piggyback injectors.

Hmmmm... I've must have read something completely different.. It sounds to me like a full blown stand alone ECU which is being developed by all kinds of folks for all diffrent kinds of cars. It looks like the LINUX of engine management.

maybe i didn't read carefully enough :\