Boost Pressure at 65mph
 

what kind of boost pressure are you guys seeing at 65-70 mph.

i get like 1 or 2 psi and that does not seem normal to me at all.

even know i have a cummins and a bigger turbo im at 12psi at 70 in 5th even with the stock turbo i was at 8 or 9 dont know why a duramax would be any different

yeah im a cummins man also and i see about 10-15 psi in 5th gear
my dads d max does the same low or no boost at highway speeds

i know it also depends weather your on flat land or a slight grade but 1 or 2 cant be corect:humm:

it all depends on the load on the motor.....I see as low as 3 lbs on flat ground doing 65-75 mph

Same here on flat ground just cruising no load no wind I see very little boost at 70. Slight grade will give some boost and a good hill I might see 10lbs.

i see low boost with no load on flat ground. on a hill with 5th wheel i might see 30. it depends on load on motor

even goin up a slight grade in the city itl go up to 2psi, but when its on flat land itl be at 1psi.

noticed im getting chit mileage too this tank :humm:

:humm: Think your turbo's going out? Could it be a waste gate issue or something?
How does your turbo respond otherwise?

im thinkin theres a leak somewhere, but can some one with a lb7 tell me what kind of boost they make at 65 mph cruising

am i like the only dmax with gauges out here :sos: