VGT %
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More Turbo
Joined: Apr 2011
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From: Western Connecticut
VGT %
I programmed my ScanGauge to read the VGT %. What values should I be seeing at idle, 2500 rpm and full throttle? How do I know the vanes are moving stop-to-stop? Thanks in advance.
Posting Guru
Joined: Jun 2012
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VGT% is a "requested" value, it's not actually measured so you don't know if the vanes are actually moving. Mine runs around 75 idle warm, goes down to 35 or so on acceleration, runs around 55 on cruise. Every once in a long time at idle it will sweep from 15% to 85 %, which are about the limits of the range. If you see around 2 psi at idle, have normal throttle response around town and get 24 - 26 psi on full throttle on a load, then you know the vanes are doing their thing.
Brian
Brian
Lead Driver
Joined: Jul 2004
Posts: 6,950
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From: Foothills, CA
Now that I'm actually seeing the data with Torque (never stared at the boost gauge before). Do you just get momentary max boost at WOT or should it stay there til you back out of it? I'm wondering if the turbo needs cleaning. I just see the 26-27 range for a bit, then maybe the truck shifts or I'm doing 80 and not watching the road 
Hotshot
Joined: Apr 2010
Posts: 19,055
Likes: 235
From: Saratoga Springs,UT
Now that I'm actually seeing the data with Torque (never stared at the boost gauge before). Do you just get momentary max boost at WOT or should it stay there til you back out of it? I'm wondering if the turbo needs cleaning. I just see the 26-27 range for a bit, then maybe the truck shifts or I'm doing 80 and not watching the road
Should about stay High Boost till you Back off it or it shifts Gears
Gear shift may drop some but shouldnt be too much loss boost
Hotshot
Joined: Apr 2010
Posts: 19,055
Likes: 235
From: Saratoga Springs,UT
VGT% is a "requested" value, it's not actually measured so you don't know if the vanes are actually moving. Mine runs around 75 idle warm, goes down to 35 or so on acceleration, runs around 55 on cruise. Every once in a long time at idle it will sweep from 15% to 85 %, which are about the limits of the range. If you see around 2 psi at idle, have normal throttle response around town and get 24 - 26 psi on full throttle on a load, then you know the vanes are doing their thing.
Brian
Brian
What he said^^^^
And to ADD alittle more info If you have AutoEnginuity ford enhanced then you can control the VGT
Once you can control the VGT you can Exicute Ford Turbo/VGT testing to see if veins are stuck or good
Thread Starter
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More Turbo
Joined: Apr 2011
Posts: 627
Likes: 1
From: Western Connecticut
Other than the occasional "high" boost of 28.8, all seems within parameters. The motor isn't tuned so I wonder why the boost number runs up higher than others I've seen posted?
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Lead Driver
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From: Foothills, CA
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