i got a 1987 mazda rx7 it was fuel injected but the previous owner made it carb, it currently has a 660cfm 4 barrell holley carb, which is ported... he also has a brand new 660cfm holley that is factory, it seems like this would be too big for such a little engine... all it has done to it is a aftermarket intake (i forget what brand..) and a little bit of spark advance... i would think that 500cfm would be adequate, but i do not know much about a rotary engines fuel needs, im new to this kind of engine...
thanks for the help!