97 miata ems for turbo applications(help!)

[JTL94']

i have a 1997 mazda miata, looking to buy a turbo kit. i am tight on money but i do want to get the best buy for my situation, with the money i have. I do not have enough money for a stand-alone, but i wanted to know if anyone has had a great tune with realistic hp gains with a piggy-back ems they have used. i talked to my local speed shop and they informed me that i may be interested in a AEM FIC, due to my situation. i would appreciate if anyone could notify me if they have used this or some other form of ems that has been successful/unsuccessful and if they there were any problems with it.