'07 5.9, g56, bone stock setup w/ gauges.
So, I've been trying to chase down a boost issue for a while now. Initially replaced a leaky boost hose and added an autometer boost gauge w/ boost bolt in the intake. When I drive, I'm only reading ~4-8 psi unless I punch it going uphill which will get me to about 14 psi. Everywhere I read, people are saying these trucks make ~30 psi at WOT and I can't even get near that. I verified the boost pressure by checking against the MAP reading on my scan tool as well. Today I connected my boost leak tester again to try and find the culprit. while I was underneath my truck trying to get a better view of my wastegate, I could hear a slow hissing sound coming from my oil pan. sure enough, I pop my oil fill cap off and hear/feel a small hiss of air. the weird thing is, when I start the truck and try and hit the accelerator with the cap off, there's nothing, not a hint of blow-by. Can anyone help me figure out whats going on here I'm at a loss?
So, I've been trying to chase down a boost issue for a while now. Initially replaced a leaky boost hose and added an autometer boost gauge w/ boost bolt in the intake. When I drive, I'm only reading ~4-8 psi unless I punch it going uphill which will get me to about 14 psi. Everywhere I read, people are saying these trucks make ~30 psi at WOT and I can't even get near that. I verified the boost pressure by checking against the MAP reading on my scan tool as well. Today I connected my boost leak tester again to try and find the culprit. while I was underneath my truck trying to get a better view of my wastegate, I could hear a slow hissing sound coming from my oil pan. sure enough, I pop my oil fill cap off and hear/feel a small hiss of air. the weird thing is, when I start the truck and try and hit the accelerator with the cap off, there's nothing, not a hint of blow-by. Can anyone help me figure out whats going on here I'm at a loss?