Megasquirts are great units. The MX6/Probe crowd used them all the time with great success. Would be nice if more people were into this stuff so they could master it and offer tunes for different mods. But most Mazda 6 people just sit back and whine about how there is nothing out there instead of using what is. I can't tell you how many PM's I get about the Unichip. I want to f**king choke the hell out of anyone who asks anymore. They never follow up and use the damn thing after all is said and done.