I was same as you ???
A macro ps4 controller doesn't have the Rapid fire mod, it's a modded controller that has Rapid fire, dropshot, auto burst etc. It's two different product categories, you can see it even in controller creator, you will be able to choose either Mods or Macros from the menu. What I'm saying is that macro controller comes with several functions: a turbo, a continuous press, a double tap a triple tap and remap. You can program any controller buttons to perform these inputs, so if you program a Fire button to do a turbo function, it' will be same as Rapid fire. The only difference is that you program it yourself.
Turbo function is when a controller repeatedly presses same button for you, here is what they say in instructions:
2
Turbo Function
Press and hold the Macro Button and the modchip will press and release the assigned stock button
The time between button presses and the time the button is pressed can be adjusted.
Rapid fire is the same thing, you hold down the Fire trigger and the controller will be quickly pressing it for you.