Once you have the Tap Favorite configured to Tap Tempo Mode you still need to make sure your Strymon Flint, TimeLine, or Mobius pedal is set up to recognize an external tap tempo pedal.
Power up while making sure that both conditions below apply:
Step 1 Power up holding BOTH footswitches.
Step 2 While holding down both footswitches (this is on page 7 of the Deco user manual):
- Turn the SATURATION knob to the 12 o’clock noon position to use Tap/Favorite as a Tap tempo switch to control the LAG TIME of the Doubletracker.
This information is also on page 6 of the Tap Favorite user manual.