I can not speak for all 6.4, only my experience and what i have read on the various forms. Might want to go for the simple fix by checking the the bands on the cold air boots. After that take it to the dealer. Could be the gage, TCM needs to be re-flashed, and a bunch more. Sorry could not add much more.
i have h&s programmer and still only see 32-35... i was starting to wonder the same thing. i hate to put dpf back on and take to dealer if im actually getting more. i have xrt pro so i dont have guages.
I actually am starting to believe my dpf is the cause. Im sure its pretty clogged it has 125k miles on it and regens between every 50-100 miles. Today I was pulling my horse trailer up a hill on the hwy and the boost spiked to 35ish for a brief moment. So im thinking maybe nothing is wrong with the engine or turbid.
That's what im thinking. It makes sense if the exhaust can't flow enough then its not going to spool the turbo. Thanks everyone. So yes I need a tuner... if anyone wants a nice brush guard its in the FS section. Thanks.
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