No, he continuously screams that the scouter is broken or it made a mistake, and Vegeta goes so far as to crush it, standard reaction when you think it's a useless piece of crap.Does not. When he hears about the power level, he is amazed that someone can be 400 a year ago and ten times more now. Vegeta orders to kill the others so they won't be overwhelmed when he'll be here, which BTW is illogical as Vegeta is 18000 and should not fear that at all.
Then, after reading 8000, Nappa still goes to fight him. Can you even imagine Saiyans, who count so much on their scouters, to go fight a guy the double his power? It's just inconsistent. Nappa would at least say "But Vegeta.... I can't win..." and maybe Vegeta would push him to fight. But that didn't happen. A little after in the fight, Vegeta tells Nappa "Come on, he isn't a dangerous opponent!!!" And Nappa agrees, saying he lost his cool.
Nappa just CAN'T be 4000.
I can imagine Nappa not believing the scouter and charging... which is what he did. This is the dumbass who tried to tank a Kienzan. He proceeded to get his ass handed to him on a plate, and could do little other than just gape in awe by the end of the battle.
Also, why wasn't he able to tank Piccolo and Gohan? Neither of them were over 5,000. If he were really 8,000 he shouldn't have been affected at all.
Still doesn't excuse making him ultra strong and an idiot for really no reason. Why not just use Cooler for the role of "powerful Frost Demon who actually advances"? He actually IS stronger than Freeza... no need to violate canon or anything.My Cold won't ever be stopped by a wall of bricks
No power change was noted... and he couldn't power up, unless you believe he temporarily used the kaio-ken, and his Kamehameha wasn't even charged. All it proves is that Nappa is extremely weak.Proof Goku changes his power level in the fight.