Active shutters.
05-22-2015, 04:31 PM
#21
03-13-2016, 04:02 PM
#22
Senior Member
Anyone ever remove these (to install a different grill perhaps) and get a check engine light after reinstalling??? Just curious if this it's normal and it'll reset itself maybe?
03-17-2016, 08:37 PM
#23
Senior Member
03-17-2016, 08:41 PM
#24
Senior Member
Thnx...yeah, after a day of driving it reset itself... Scared me at first cuz off the 100+ ppl who installed this grille, no one else ever mentioned the engine light coming on, though perhaps I screwed something up
04-04-2016, 11:45 PM
#26
Active shutters
Yes, it does improve fuel economy by reducing drag. That faster you drive the more you will gain from the shutters. Same reason they block up as much of the front of a vehicle as you can for drag racing and especially for the texas mile.
I'm going to leave many details out but here's some basics as to why hot air is more efficient. Hot air is less dense meaning you need less fuel to become stoich. Hot air also has less temperature differential so less thermal transfer within the combustion chamber which, in a nutshell, means that when the fuel is ignited more of the heat is used to pistons down instead of other wastes of energies. Same reason some cars use electric thermostats, they run hotter for fuel economy, 230* or some (although hot air is not good for power because of detonation purposes where those cars reduce temperatures to around 180-190*). I expect ford will use electric thermostats in the near future as they chase CAFE numbers.
Another benefit is that it will heat up the intercooler and help prevent condensation buildup. Not to change the subject, but has anyone had this problem on the 15' yet?
I'm going to leave many details out but here's some basics as to why hot air is more efficient. Hot air is less dense meaning you need less fuel to become stoich. Hot air also has less temperature differential so less thermal transfer within the combustion chamber which, in a nutshell, means that when the fuel is ignited more of the heat is used to pistons down instead of other wastes of energies. Same reason some cars use electric thermostats, they run hotter for fuel economy, 230* or some (although hot air is not good for power because of detonation purposes where those cars reduce temperatures to around 180-190*). I expect ford will use electric thermostats in the near future as they chase CAFE numbers.
Another benefit is that it will heat up the intercooler and help prevent condensation buildup. Not to change the subject, but has anyone had this problem on the 15' yet?
04-05-2016, 12:34 AM
#27
I spent a lot of countless hours doing aerodynamics homework in college and can say that while the shutters do help reduce drag...it's not by much. I would guess they are mostly for improving cold-start warm-up performance...which also helps economy...and durability...hardly. I didn't realize they put these on the 5.0's...interesting. Just another trivial utility item that can break. :-)
Last edited by gopherman; 04-05-2016 at 12:39 AM.
04-05-2016, 05:37 AM
#28
Senior Member
Every little bit helps. Shutters in the grill, tailgate lip, front air dam, computer commanded alternator, curved front body work, 6 speed transmission etc. etc. None of these things do a lot by themselves but they each contribute to the overall improvement
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Apples (05-10-2019)
04-05-2016, 05:48 AM
#29
Here's some pictures of the upper shutter on my 2015 F150 w/5.0L - taken when I swapped from the XLT to Lariat grille. The first picture is with the upper shutter still mounted in the upper grille. The second picture is of the upper shutter removed from the upper grille.
04-05-2016, 06:17 AM
#30
IMO I think they were put there to help the engine warm up in the sub zero temps and alsow assist the engine to stay warm in real cold temps. How can a shutter be saving mpg I don't get it? The air will be forced trough the rad when opened and hitting the shutter when closed.
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TERRY DAUDRICH (10-26-2020)