Larry,
The Turbo mode works like this:
Step 1. You map any desired stock button on the controller to a back paddle (for example, a fire button)
Step 2. Get the mapped paddle into a sub-mode 2 (Turbo)
Step 3. Once you press and hold the paddle, the controller will be mashing the stock button from step 1 on your behalf (in case of mapping a fire button, you will get a Rapid Fire function)
Check out these videos, they demonstrate how to use the macro remap controller:
https://www.youtube.com/watch?v=38EC9WNwZtY
https://www.youtube.com/watch?v=DN-FdhY-EiU&list=PLWvZyWcPJ0sysrJ8Y6CfDTYku7EIr0eW3&index=3