BOOST???

[strokin07]

Can someone tell me what is the max boost pressure from the factory? I see about 31-32 psi, is this acceptable for a completely stock 6.4?

[strokin07]

Anyone? I have looked with no success

[XPLOSIV]

I think I used to see mid to high 30's on WOT back when my truck was stock, but that was a while ago. Are you worried about your numbers being too low or too high?

[strokin07]

I am worried its too low. Its tops at 31-32. Is that normal? The thing is I am about to get h&s and delete but if something is wrong I need to address it first.

[pyro2nite]

31-32 is a little low. Before my DOC/DPF fell off I would see 38-39.

[strokin07]

So what could be causing this? How do I fix it?

[strokin07]

Do all 6.4s run @ 38-39 or does it vary?

[pyro2nite]

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.

[strokin07]

Thank you guys. Ill call the dealer and see what's up.

[KMarlatt]

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.