Where did you find that info?Here is a bit of info copied;
ICP should be over 500 but 480-550 is normal Spikes to 2200 while cranking
ICP DC or aka IPR should be between 10-15% as well as Accelerator Pedal Position between 10-15%
WOT ICP DC should not exceed 65% and ICP should not drop below 1800PSI with Pedal Position between 70-80% Take out chip as rev limiter may be disabled with it in.
EXBP should be 10-15psi with EBPV closed and not exceed 45psi at WOT
EXBP showing low (3-5psi) that barley rises with acceleration indicates bad sensor or plugged tube.
Hope it helps some. Seldom do the ICP readings reach 2500 but if you do your truck is awesome.