Help with turbo
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Freshman User
Joined: Nov 2012
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From: Denison, Iowa
Help with turbo
I have a 2007 F250. I'm sitting at 96,081 on the odometer and 2210 on the engine hours. I have done the blue spring mod and cat delete. My truck is not chipped.
At normal operating temperature my VGT % hovers around 75-85. My boost will not go over 25psi. I thought at one time I read that you're VGT % should not go over Like 70 or 75 and you should be able to get more than 25 pounds boost. Not sure...can someone help me out...thanks
At normal operating temperature my VGT % hovers around 75-85. My boost will not go over 25psi. I thought at one time I read that you're VGT % should not go over Like 70 or 75 and you should be able to get more than 25 pounds boost. Not sure...can someone help me out...thanks
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
I have a 2007 F250. I'm sitting at 96,081 on the odometer and 2210 on the engine hours. I have done the blue spring mod and cat delete. My truck is not chipped.
At normal operating temperature my VGT % hovers around 75-85. My boost will not go over 25psi. I thought at one time I read that you're VGT % should not go over Like 70 or 75 and you should be able to get more than 25 pounds boost. Not sure...can someone help me out...thanks
At normal operating temperature my VGT % hovers around 75-85. My boost will not go over 25psi. I thought at one time I read that you're VGT % should not go over Like 70 or 75 and you should be able to get more than 25 pounds boost. Not sure...can someone help me out...thanks
Hotshot
Joined: Jul 2005
Posts: 13,834
Likes: 25
From: Middle Tn.
25 to 28 is pretty average. Under what conditions did you get the 25? Hook a trailer up to her and find a hill to climb. That should give you the max boost you'll get with your truck. You do not want more than 28 with a non-studded engine. I wouldn't worry about 25. Beats HG's.
Postmaster
Joined: Sep 2010
Posts: 3,472
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From: Southern Cal
I have a 2007 F250. I'm sitting at 96,081 on the odometer and 2210 on the engine hours. I have done the blue spring mod and cat delete. My truck is not chipped.
At normal operating temperature my VGT % hovers around 75-85. My boost will not go over 25psi. I thought at one time I read that you're VGT % should not go over Like 70 or 75 and you should be able to get more than 25 pounds boost. Not sure...can someone help me out...thanks
At normal operating temperature my VGT % hovers around 75-85. My boost will not go over 25psi. I thought at one time I read that you're VGT % should not go over Like 70 or 75 and you should be able to get more than 25 pounds boost. Not sure...can someone help me out...thanks
Under heavy load, I now get just up to 28#'s of boost. Just before it had decreased to around 24#'s.
Just maybe???
The other thing, I had the "romps" pretty bad when starting up, like injector stiction. Now, after the fix, no more "romps."
Have you noticed a change when starting cold?
I have just over 80k on my truck.
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Freshman User
Joined: Nov 2012
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From: Denison, Iowa
Yes I do have the romps. Especially when its cold out. I thought it was a little stiction going on. Maybe I will take a day and pull my turbo and check it. I just didn't want to go through all the trouble to find out is a different problem. Thanks for all the responses so far.
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Joined: Aug 2001
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25 psi is fine, especially if you have the latest VXCF9 strategy.
A couple things you could do before pulling a turbo is clean the EBP sensor and tube and make sure the MAP sensor hose is clear.
Josh
A couple things you could do before pulling a turbo is clean the EBP sensor and tube and make sure the MAP sensor hose is clear.
Josh
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Postmaster
Joined: Sep 2010
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From: Southern Cal
He warned me to not be concerned when I felt less power, especially at top end due to a potential overboost condition.
Unloaded, it became a rocketship at top end before the repairs, not now, even though my boost #'s were showing lower before.
I did originally pull and underboost code and he indicated that was better than an overboost, knowing at top end, those head gaskets could be at risk. Just a little confused why I'd pull an under boost code, yet see so much power at top end?
Now after towing this last week, the power range was very noticbly different at mid range, giving more pulling power in 4th and 5th at lower rpm's.
Did you pull any codes to prompt this concern? That's what brought the attention to me.
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