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hey guys I really don't know where to start looking but since i have gotten the truck the boost gauge has not worked on the dash. everything else works just fine only the boost needle doesn't move at all. My truck is an 05 f250 mostly stock. stock tune, k&n intake, stock exhaust (has the muffler and cats cut out). Any help would be great.
 

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Hello, there is a brass nipple on the intake manifold that has a hose that goes to the MAP sensor mounted by your AC box. Hose likes to split there and carbon block office. Replace hose and run hanger into nipple to clear carbon.
 

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Sorry just saw this. Yes, just get something to stand on, follow MAP sensor mounted by air box, the hose that runs down to nipple. Squeeze clamp together, pull hose up, run coat hanger through the nipple DO NOT drop hanger piece or other tool into that intake.
 
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