Compression Ignition Addict
Join Date: Feb 2009
Location: Nacogdoches, TX
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The 10k mod just fools the PCM into thinking that it's seeing less pressure in the oil rail than is actually there. So, it closes the IPR more, which raises ICP to what it 'thinks' should be there. Therefore, you have higher ICP.
If you have a leak, bad ICP, or other things, they will show up better with the higher pressures.
Also, the shifting has nothing to do with the resistor. The ICP does not control that.
2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
330,000 + miles