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Calling all gen2 3.5 Ecoboost owners #5111893
05/21/19 11:51 PM
05/21/19 11:51 PM
Joined: Aug 2004
Posts: 2,319
5600 feet elevation, Arizona
double vanos Offline OP
double vanos  Offline OP

Joined: Aug 2004
Posts: 2,319
5600 feet elevation, Arizona
If you’ve ever wondered just exactly what’s going on with your G2 F150 3.5 this long web page tells all from fuel ratios to trans strategy to shutter operation and much, much more. It’s long, and highly technical, but if you’ve ever wondered......
https://www.nhtsa.gov/sites/nhtsa.dot.gov/files/documents/812520.pdf


Sabine Schmitz is the Queen of the 'Ring; Svetlana Kapanina is the Queen of the SKIES...
Re: Calling all gen2 3.5 Ecoboost owners [Re: double vanos] #5112260
05/22/19 10:42 AM
05/22/19 10:42 AM
Joined: Sep 2002
Posts: 4,458
Lakeville, MN
MNgopher Offline
MNgopher  Offline

Joined: Sep 2002
Posts: 4,458
Lakeville, MN
A lot of really good stuff in here that quantifies what the truck actually does rather than a bunch of generalities. Applies to a lot of what the F150 is doing, regardless of engines too.

Interesting info: (to me anyways)
-Quantification of the fuel savings achieved through the use of start stop technology (which as expected varies depending on the drive cycle).
-Active Grille settings (which match much of what I have observed with mine over the years - a big one being the radiator shutters default to 30% open in sub freezing weather, not closed as so many believe).
-Quantification of differences in fuel economy with regular and premium fuels (these engines require 87 octane and recommend premium for towing and high performance)
-Quantification of fuel economy differences at temps other than the standard testing temp (cold and hot with A/C)

Among many, many others...

Great stuff if you are a nerd like me who likes understanding how the truck is operating...

Re: Calling all gen2 3.5 Ecoboost owners [Re: double vanos] #5112405
05/22/19 01:29 PM
05/22/19 01:29 PM
Joined: May 2013
Posts: 1,199
upstate NY
dustyroads Offline
dustyroads  Offline

Joined: May 2013
Posts: 1,199
upstate NY
I downloaded the file and look forward to reading through it. I have a Coyote but my next truck may have the Ecoboost and I just enjoy learning some of the more technical "stuff" when I can find it. Thanks for posting!


2013 F150 XLT 5.0 4X4 109k miles
Edge 5W-30 / Boss 22500
Re: Calling all gen2 3.5 Ecoboost owners [Re: double vanos] #5112514
05/22/19 03:16 PM
05/22/19 03:16 PM
Joined: Feb 2007
Posts: 3,898
Southeast
meep Offline
meep  Offline

Joined: Feb 2007
Posts: 3,898
Southeast
Excellent read, thanks for posting. I also found the mpg comparison between low and hi test interesting, and it corresponded with what I've seen = very little difference, BUT the driveability is sloppy on low octane fuel. between minute turbo lag, dbw, lots of gears to shift, and defueling mid-shift, it is unnerving to drive on 89 octane. The acceleration feels haphazard or even accidental. Drives smooth and true on high octane. Mixing it with low and high doesn't improve it either. 3/4 of the tank needs to be 93 for it to accelerate smoothly. I think some future owners, if they are in tune with their vehicle, will be disappointed with this.

Mine is a 2018 - I've never, ever, seen it go over 8th gear in tow mode, which differs from the article. 9-10 are also torque limited, essentially negating throttle inputs more than 1/4 or so.

They confirmed what I have felt to be excellent TC programming as well. I feel that thing starting to participate in 3rd.

I wish their towing simulation was a little more thorough. for a given weight, say 4900lbs, there's a huge difference between pulling a boat or a travel trailer. I was surprised to read 7% increase in towing mpg by leaving the trans in "normal" mode. I'm not sure I believe that would be such a big difference for a high-resistance pull, like a travel trailer.

Surprised! to see how much it relies on port injection, only using DI at higher demand. That answers the question about if it will need intake cleaning!

-m


2018 F150
2015 crv (wifey!)
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