How can you modulate the pitch of a clip with a delay plugin?
Do you use the feedback?
well, indeed you'll get a pitched sound using very shorts delay with a lot of feedback.. but if you want to do some pitch modulation out of a delay, you need to modulate the delay line. if you are on a modular environment (reaktor, max, etc.) try to patch a control signal (envelope generator, lfo) to a delayed signal.