Description WDI HIGH PERFORMANCE, HIGH PRESSURE IPR VALVE After months of testing we are excited to launch our high performance, high pressure IPR Valve for the 6.0L Powerstroke. This product is modified from a BRAND NEW OEM Motorcraft IPR Valve.  We have these in-stock and ready to ship! Guaranteed not to blow open. Built to withstand 5500 psi without any modifications. Tested to 6000 psi on our engine dyno. NOTE: This IPR valve is capable of 5500-6500 psi.  However, you will need a resistor mod installed to go over 5500 psi.  If this is something you wish to proceed with, please give us a call  before ordering.