I think it's because the turbo spools up then settles down but flooring it at low revs the turbo spools up and there's no need for the extra boost so it can cause a big spike and blow the turbo.I also have a boost gauge forgot to mention that. but flooring below 2400 would be dangerous?
22psi spikes on a vnt15 is fine.. Why don't you wait until you get the tune before you start worrying about itIt'll spike to 22 Psi for a second.. Than settles around 18. should i set the boost valve to clip it sooner if i go with stage 3