FcsIII

A friend of mine has a 93 Rx7 he bought a Power Fc used and installed it. Now he having boost problems. I was wondering if anyone had a good map or could help with tunning or where to get tuned. I also think that he did not get a FCD with the power Fc cause it boost cut at 6500rpm. Is there a way to wire or make a fcd like you can do on 2nd gens. Does anyone know where he can get one? Here's what he got....Street ported motor. 850cc secondary, 550cc primarys, up graded intercooler, intake and 3in exhaust. and a greddy boost controller. Any ideas would be apperciated. Thank in advance.