I think i have an analogy that will hopefully clear up any confusion. Say you have a syringe full of water, and you hold your finger over the end. Now push down on the plunger with a light amount of pressure and remove you finger for 1/2 a sec. - the same amount of water will always come out if the pressure and time stay the same. Now increase the pressure on the plunger but keep the time your finger is off the end the same - more water comes out, lower the pressure but leave your finger off the end longer = more water out. Pulse width = time finger is off the end, ICP = pressure on the plunger. Hope that helps.
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Put a Turbo on it!!!! 
'95 F-250 Powerstroke, 350,000 Miles, Mods: Phoenix chip, 140V IDM, Diamond Eye DP to 4" straight pipe, CCV mod, Amsoil synthetics throughout.
'04 F-350, XLT Lariat, Powerstroke, CC, Dually, SS exhaust, AirRaid intake and filter, Edge Evolution, PHP FICM programmer.
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