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Message: [QUOTE="JHILL, post: 395688, member: 203"] no unusual codes, until we ran a buzz test all 8 buzzed -ok but all 8 cylinders came up as high/low open circuit and a 1298 for the IDM -not unusual for a modded IDM. swapped IDM's for the heck of it, cleared all codes no codes other than usual for given mods. Put a mechanical gauge on at oil filter port, when first started up at Idle, 20psi mechanical, dash in the normal range, no oil light. 1500 rpm 50psi . Decided to try and drive it home. 1 mile down the road same issue as last night ,under 1300rpm's dash pressure drop's with oil light on. Confirmed on Mechanical gauge back at the shop,Lube oil pressure drops, ICP / DC on scanner are normal values when Dash light comes on and pressure drops. Did not run it very long with 0 psi on the dash to see how long it would take to see a HPO drop. IDK what direction to go next, leaning towards a LPOP. Have read about oil cooler relief valve's that stuck open. Can an injector pass enough oil to cause this issue? Still runs rough, starts up fine. [/QUOTE]

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