Does higher idle mean higher powerband?

[xcelr8n]

hey guys, I seem to notice that when my car is idling properly at 8-1000rpms give or take a little, I hit full boost by like 2800 (17psi)... but when my idle is totally shit which it will randomly become over night for no reason I cant hit 17psi until say 3300 rpms.. its like since the base idle is set higher the power comes on later...
is this correct?

 

[blue1]

No it doesn't mean what you are thinking but i would have your idle control motor checked! sounds like it's not doing its job correctly

 

[xcelr8n]

nah, its not the isc forsure, its thats it gets cold here sometimes and I dont have FIAV