for those of us with ecoboosts getting less than advertised mileage.
06-26-2012, 07:39 AM
#31
I'd focus on this. That coast down time shows increased drag, coupled with the slower 0-60 time shows that it is likely to be a mechanical issue rather than aerodynamic. Could be the bigger more aggressive tire/pressures, but maybe brake drag, torque convertor settings, improper alignment, wheel bearing, etc...
06-26-2012, 10:55 AM
#33
So....anyone have any idea where the pressure sensor is located?
I see what looks like a differential pressure switch that's tied in both upstream and downstream of the passenger side turbo, with a 3rd line that looks like it's connected to the bypass valve. I see the 3 IATs, and then I see some weird thing on the drivers side valve cover connected to two vac lines going forward and 2 going aft.
I see what looks like a differential pressure switch that's tied in both upstream and downstream of the passenger side turbo, with a 3rd line that looks like it's connected to the bypass valve. I see the 3 IATs, and then I see some weird thing on the drivers side valve cover connected to two vac lines going forward and 2 going aft.
06-26-2012, 12:00 PM
#34
I found the answer:
Since I don't have all of my tools with me, I won't be able to check the resistance of the different sensors to see if I notice any discrepancies.
When I get home I'll also put on a vac gauge to check the accuracy of the reported boost pressures.
I asked my wife If I could trade tires with her for the ride home, to check 1000 miles worth of fill ups and see what the difference is. She yelled at me.
I'll be swapping all of the IAT sensors from one truck to the other, and unfortunately I got called in to work, so we will be taking separate routes home. The difference should be immediately noticable though, as both trucks display the mpg gauge right at the average at 72mph.
It's a temperature sensor. No MAF for EcoBoost vehicles even though Ford lists it as one.
The only late model speed density vehicles I know of are late model Hemi's and EcoBoost vehicles.
Since there is no MAF, you can add any CAI without issues. It also has a wideband that acts quickly, so there are no tune updates needed for CAI or exhaust mods.
The 5.0 has a wideband as well and we've installed headers and exhaust with no tune changes and air/fuel is perfect. They (the 5.0) does however have a MAF, so it does require tuning for most CAI's.
-Rick
The only late model speed density vehicles I know of are late model Hemi's and EcoBoost vehicles.
Since there is no MAF, you can add any CAI without issues. It also has a wideband that acts quickly, so there are no tune updates needed for CAI or exhaust mods.
The 5.0 has a wideband as well and we've installed headers and exhaust with no tune changes and air/fuel is perfect. They (the 5.0) does however have a MAF, so it does require tuning for most CAI's.
-Rick
When I get home I'll also put on a vac gauge to check the accuracy of the reported boost pressures.
I asked my wife If I could trade tires with her for the ride home, to check 1000 miles worth of fill ups and see what the difference is. She yelled at me.
I'll be swapping all of the IAT sensors from one truck to the other, and unfortunately I got called in to work, so we will be taking separate routes home. The difference should be immediately noticable though, as both trucks display the mpg gauge right at the average at 72mph.
06-26-2012, 03:48 PM
#35
Juggernaut
Sounds like the exact answer my wife would give also! Good Times.
06-27-2012, 07:02 PM
#37
Senior Member
I don't want to oversimplify anything, but I would say the tire difference is the main culprit. I have TKO's on my truck, and they are for sure heavier than the stock tires, even in the same size. Plus you went up a size and even that little bit will throw off any readings. I am in the middle of testing why my MPG is always around the 15 mark no matter how I drive, and want to see if my tires are the main cause...
06-28-2012, 02:23 AM
#38
I don't want to oversimplify anything, but I would say the tire difference is the main culprit. I have TKO's on my truck, and they are for sure heavier than the stock tires, even in the same size. Plus you went up a size and even that little bit will throw off any readings. I am in the middle of testing why my MPG is always around the 15 mark no matter how I drive, and want to see if my tires are the main cause...
my plan, when I get back home (2 weeks or so) is to:
compare digital signal output to an analog gauge for manifold pressure.
Jack up each wheel individually and use a torque wrench to determine how much force is needed to turn each tire.
put the truck on jackstands and with the transmission in neutral, the t-case in 4 low and locker locked, see how much force is needed to spin the whole system.
compare that to what it takes for my truck.
by the way the hoses had popped off again by my first fill up. I cut a zip tie off that seemed to be pulling it away from the intake tube.
sorry for the punctuation and typos, I'm on my phone.
07-07-2012, 03:10 PM
#40
Car Lover
I am a talk radio guy and while listening to the Car Pro show today a guy called in with an Ecoboost. He was complaining about the poor mileage as many people are. The hosts answer was that the engine hadn't broken in yet. He said that for some reason these Ecoboost are taking longer than they have seen before to break in...who knows.
The caller was taking the truck in Monday to get it looked at though.
The caller was taking the truck in Monday to get it looked at though.