Do you have data showing N2O activation circuit on/off? I've seen this before on my car when the N2O activation switch was going on/off very quickly.
Right - that's what I'm saying, if that throttle switch or relay contacts drop the circuit for a split second you'll see what you're talking about briefly. Just something to check...No data on that. The activation switch should be on the whole run not cycling off and on. Once the progressive is done they are still on.