From memory, setting a 2 watt carrier with NPC OFF was around 8-10w PEP. NPC ON was around 12-15w PEP, but with a lot of distortion to see those numbers.
(Don't worry about "average swing" readings, especially with NPC working the way it is now, because that's only going to show higher average readings due the the distortion)! This is obviously not what we want to see.
Also watch the last CBRadioMagazine video, and the review video's from Scotts Radios for more recommendations to keep the NPC OFF, for now.