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Location: Sassamansville, Pa
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Some custom tunes manipulate just the ICP psi, some manipulate both ICP psi and ICPv when read thru the OBDII. If the tune writer only fools the ICP psi then the ICPv will be accurate, this will allow you to convert ICPv to true ICP psi. If the tune writer fools both ICP psi and ICPv, then you will need to run a analog gauge "t"d into the HPOP system.
You would need to contact your tune writer to find out which method is used on your tunes.
The pic below is a DashBoss data log of my SRL++ file. The top of column shows the PID. ICPv, ICP psi, and ICP Calc psi. The ICP Calc PID shows what my ICP psi is really reading.
A healthy HPOP should reach just over 4k psi, when maxed out.
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2004 F350 CC DRW King Ranch
X-3 tunes by DJ'S,QT,GH,ID. Gryphon FICM tunes, ARP studs,Stage 1turbo,ATS coolant recirc lines,Swamp's 48v ficm,coolant filter,AD2,Snow Perf stage II,EGR delete,4" turbo back straight pipe,S&Bintake,Quad "A" pillar autometer gauges,Suncoast Tri Disk Conv.,Billet input shaft,Suncoast superduty rebuild kit,Trans-go shift kit,Mag-Hytec trans pan,CFM+ elbow,ccv mod,15K reese 5er,17" LCD TV/DVD,Cobra 29 Nitewatch CB