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Message: [QUOTE="Foggy6.0Liter, post: 1277471, member: 22897"] Okay guys, been tearing my hair out over this issue for quite while. I can't get the truck to make the boost it should and its been getting worse. Peaking at 22psi, I'm running a barder stage 4 71mm powermax and 275/100s, truck should make 40+ pretty easily. Thus far I have checked for exhaust leaks and intake tract leaks, no issues, (pressurized the intake tract with shop air and sprayed it down with soapy water). Replaced map sensor and hose, replaced ebp sensor and tube. Tried running with map sensors unplugged, tried with vgt solenoid unplugged. Swapped out the stage 4 for my stock turbo, no improvement after any of these efforts, actually running worse now with the stock turbo. Boost peaks at 13 with the stock turbo. Only known issue with the truck is I know the head gaskets are compromised, but I wanna get this boost issue figured out before I tear it down to do gaskets. Any help is appreciated. [/QUOTE]

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