turbo PSI range?
Hotshot
Joined: Jul 2005
Posts: 13,834
Likes: 25
From: Middle Tn.
Too get the max psi boost you need to put a load on her and nail it. Max on a stock truck should be 28 and the low acceptable around 21. With stock tires on a 4 X 2 my boost cruising at 65 to 70 is about 2 to 3 psi. Pushing those 35's is not doing your mileage any good at all. Everything comes with a trade off including your driving habits. More boost means less mpg's.
Post Fiend
Joined: Oct 2009
Posts: 12,123
Likes: 35
From: N. Fort Worth, tx
You question cant really be awnsered as asked? Do you still have an egr system? Stock exhaust?
The more air you can move the more the boost number will drop.
Norma and stock truck is 28psi max.
The more air you can move the more the boost number will drop.
Norma and stock truck is 28psi max.
Laughing Gas
Joined: Oct 2012
Posts: 794
Likes: 1
From: Ontario
Stock is a question asked in engine bay modifications, and not tire size either. If anything, bigger tires will increase load at all ranges, making the turbo work more. I have new 35" treadwright guard dogs on my truck and just was out romping around and i was still hitting 28 PSI on WOT. If you're only seeing 20 or so at WOT you need to either check for leaks and/or inspect the turbo.
Just want to add my mileage is 12 MPG average small trips, to work, groceries etc. Highway is 17-20 depending on headwind/hills etc. Engine is all stock that i know of, just newer stock parts.
Just want to add my mileage is 12 MPG average small trips, to work, groceries etc. Highway is 17-20 depending on headwind/hills etc. Engine is all stock that i know of, just newer stock parts.
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New User
Joined: Jun 2014
Posts: 6
Likes: 0
From: Ferndale, WA
I'm stock exhaust and under the hood. WOT....Wide Open Throttle? This might be a dumb question...do you need a tuner to roll coal or other mods? Can a stock truck make any black smoke?
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Posting Guru
Joined: Dec 2012
Posts: 2,169
Likes: 3
From: SW Florida
Yes...WOT is wide open throttle
Normally, if a stock truck is "rolling coal"....you have a problem. So technically yes.... a stock truck can do it, but probably not because you want it to.
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New User
Joined: Jun 2014
Posts: 6
Likes: 0
From: Ferndale, WA
thanks. My 13yr old son wanted me to roll some black smoke. I couldn't make it happen. Ive only had the truck for 2 months, and finding out It has a few issues. I've changed the oil, need to flush coolant asap. Im replacing rear diff fluid this weekend.2005 F350 6.0L 4x4 181,000 miles, 35's, Tuff Country dual steering stabilizer, front leveling kit.
Post Fiend
Joined: Oct 2009
Posts: 12,123
Likes: 35
From: N. Fort Worth, tx
Yes you can, just get the egr valve to hang up
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