m30 afm and "i" tb make a difference in my car?

[e30hereicome]

1988 seta with aftermarket intake, 173 ecu with markd chip (91 octane, stock injectors), magnaflow muffler. currently have the M30 afm last 3 digits 066, and I throttle body with the intake bellow. think those 2 would make a difference? also does anyone know where i can find the intake bellow that fits into the m30 afm on one end and fits the 'I' tb on the other? i just got an intake bellow courtesy of bimmer2288 to fit the "i" tb but doesnt fit the m30 afm side so i need one that would go in both ways.

[AdamF 88iS]

Without the i cam I doubt it would be worth it. You may notice a small gain, but you really need the high rpm cam setup.