Tap Tempo can have different effects with different effect combinations. Since Delay is always available with the POD, you could, for instance, have Tremolo chosen on the Effects Select knob, but have the channel stored with the tremolo in the off position. If you turn
on the Delay from the Floor Board and then try to adjust the delay time with the Tap Tempo, you’re actually adjusting the tremolo speed, rather then the delay time (See the handy chart in Appendix B of your POD manual to see what Tap Tempo controls with each effect and
effect combination).