VGT Vane Cycle??? - Ford Powerstroke Diesel Forum
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post #1 of 29 Old 01-24-2011, 03:34 AM Thread Starter
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VGT Vane Cycle???

I was reading somethings, on another site, about where the variable vanes in the turbo are suppost to cycle when at idle and some people have noticed that this isn't occurring when running the EGR valve unplugged, even with a SCT tune that's suppose to delete the EGR. I have just added an EGR delete to my truck and I have run the EGR valve plugged in and unplugged but I can't tell a difference. My question is how can you tell if your vanes are cycling? I would assume you would hear a change in the exhaust but I don't hear any changes. My turbo was stuck but I cleaned it just a couple weeks ago when I had the truck down doing head gaskets and all that and the unison ring when put back was freely moving with no problems so I wouldn't think it's stuck as of right now.
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post #2 of 29 Old 01-24-2011, 03:40 AM
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The vanes only cycle at idle with the newest flash VXCF9

If you dont have that flash they wont cycle

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post #3 of 29 Old 01-24-2011, 03:48 AM Thread Starter
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Originally Posted by Dave View Post
The vanes only cycle at idle with the newest flash VXCF9

If you dont have that flash they wont cycle
Would it be advisable to get that flash? I currently have strategy VXCF4DC and not sure how old that is. I just ordered some tunes under that flash so will they need to be changed if reflashed? I'm new to this tunning.
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post #4 of 29 Old 01-24-2011, 03:59 AM
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Yes, if you get a new flash you will have to have new tunes written. I am trying to figure out who to get the new tunes from after my reflash to the new VXCF9.

The new flash does make the turbo sound cool when it cycles, and on a stock truck it has helped my fuel economy a bit.

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post #5 of 29 Old 01-24-2011, 04:03 AM
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If you have VXCF4 and no issues leave it. Thats the best flash ford put out for the 05 up trucks

Email: Dave@powerstroke.org
2011 F150 Ecoboost Crew cab lariat. Custom tunes from KEM and 5Star, and Unleashed
2012 F150 Crew Cab Ecoboost stock for now-Totaled March 12 2015
2006 F250 ECSB Lariat 4x4

Leveling kit, 315/70/17 Kelly TSRs on Method race wheels
ARP studs and OEM gaskets done by Renegade Diesel
ECM and Atlas 40 FICM tuned by Bill at PHP SCT tunes by Truck Source Diesel. Gearhead, Innovative, Wildman and Tyrant diesel
Flowmaster/MBRP Hybrid Exhaust
Edge Insight CTS
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Bulletproof diesel FICM EGR Delete, Oil Cooler and Water Pump, and Light bar.
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post #6 of 29 Old 01-24-2011, 04:36 AM Thread Starter
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Originally Posted by Dave View Post
If you have VXCF4 and no issues leave it. Thats the best flash ford put out for the 05 up trucks
Is there a good thread to read up on what advantages and disadvantages there are for different strategies? Before I had started reading about these things I was trying to think of a way to make the veins sweep on the turbo and I feel this would be a great advantage to prevent the turbo stickage as I have already experienced.
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post #7 of 29 Old 01-24-2011, 04:45 AM
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That sweep was added to prevent sticky vanes.

As far as advantages. VXCF4 nets the best power and mileage of a stock 05-07

Dont want VXCF7 as thats the FICM killer

VXCF9 aids cold starts has the vane sweep but you also lose power and mileage.

If you want to avoid sticky vanes and keep the Vxcf4 flash just get on the throttle occasionally make the vanes move

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2011 F150 Ecoboost Crew cab lariat. Custom tunes from KEM and 5Star, and Unleashed
2012 F150 Crew Cab Ecoboost stock for now-Totaled March 12 2015
2006 F250 ECSB Lariat 4x4

Leveling kit, 315/70/17 Kelly TSRs on Method race wheels
ARP studs and OEM gaskets done by Renegade Diesel
ECM and Atlas 40 FICM tuned by Bill at PHP SCT tunes by Truck Source Diesel. Gearhead, Innovative, Wildman and Tyrant diesel
Flowmaster/MBRP Hybrid Exhaust
Edge Insight CTS
Coolant filter
Bulletproof diesel FICM EGR Delete, Oil Cooler and Water Pump, and Light bar.
Dually LED lights from Stealth Automotive/Xpedition Outfitters
No Limit Fab 6.0 Cold Air Intake
http://www.bulletproofdiesel.com/default.asp
http://nolimitfabrication.com/
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post #8 of 29 Old 01-24-2011, 05:08 AM
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dave you are a wealth of info. Was thinking about updating my flash at the dealer but I have VXCF4. I am going to stick with that now. Iam pretty sure I can exercise my veins myself


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post #9 of 29 Old 01-24-2011, 05:33 AM Thread Starter
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Once you're flashed to a new strategy you can't go back can you?
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post #10 of 29 Old 01-24-2011, 05:37 AM
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What year has the VXCF7 strategy?
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