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Probably need to check it, find a preasure gauge and hook it to the map sensor side (remove the regulator and hoses from the truck for this) then apply air to the manifold side and adjust the **** until it shows no more than 20 psi on the gauge (apply about 40psi of air)
The Haynes book says that has to do with waste gate actuator not detected. I kept getting that error after I put in 4" exaust, programmer and K&N. I replaced waste gate actuator with one from BD and never saw code again. Mechanic told me springs get weak after upgrades. After market wastegate will up the boost a little too.
monsterbaby,i talked to dennis@itp and he can adjust it for me,hope that works!
rugermack,i have the banks bighead on my turbo but thanks for responding.