I put an EJ25 and I'm thinking of megasquirt... Anyone have one or anything else?

What year EJ25? DOHC or SOHC?

 

Are you looking to do stand alone?

 

You may want to try searching the engine management forum on nasioc http://forums.nasioc.com/forums There may be some additional recommendations, and possibly already tuned maps.

GRM had good things to say about the Power Card.

 

http://www.powercardtuning.com/