EcoBoost Mileage Better with Premium?
#31
For most vehicles, that is true. For the EB (and many newer Ford engines), that is false. If an engine is tuned to check for the octane level and adjust timing due to the different octane level, it is possible to get more HP and better MPG if running higher octane gasoline.
I don't know if Ford has released these numbers for the F150, but I think the SHO makes 10-15 more HP and torque on 93 vs. 87.
I don't know if Ford has released these numbers for the F150, but I think the SHO makes 10-15 more HP and torque on 93 vs. 87.
The ECU does a knock check. If there is no detonation it's not going to pull timing. It's called a knock sensor.
Higher octane = no gain.
The only thing that will provide more power would be to add boost.
#32
How many miles are on your truck? The 4WD is hurting. As is the 4.10 gears (3.55 would be best) and the 33" tires arent helping at all.
for testing purposes, OP need to keep it at the same station (preferably the same pump) and run 2-3 tanks of 87 and 2-3 tanks of 93 to get more accurate results.
for testing purposes, OP need to keep it at the same station (preferably the same pump) and run 2-3 tanks of 87 and 2-3 tanks of 93 to get more accurate results.
Quote:
Originally Posted by Langford
I'm jealous...I can't get better than 13-14mpg on the highway with my ecoboost at 70mph. 4x4 crew cab, 4.10 gears on 33" MT's...so far from the best setup for mileage, but not near what I expected.
Get your whole rig recalibrated. Your truck's computer is set up for standard dia tires.. Plus the additional tire's contact patch equates to friction and those 4.10 gears ain't helping. You are getting 6.2 Raptor mileage
Originally Posted by Langford
I'm jealous...I can't get better than 13-14mpg on the highway with my ecoboost at 70mph. 4x4 crew cab, 4.10 gears on 33" MT's...so far from the best setup for mileage, but not near what I expected.
Get your whole rig recalibrated. Your truck's computer is set up for standard dia tires.. Plus the additional tire's contact patch equates to friction and those 4.10 gears ain't helping. You are getting 6.2 Raptor mileage
#33
BS - Point me to the part number for the sensor that checks octane levels.
The ECU does a knock check. If there is no detonation it's not going to pull timing. It's called a knock sensor.
Higher octane = no gain.
The only thing that will provide more power would be to add boost.
The ECU does a knock check. If there is no detonation it's not going to pull timing. It's called a knock sensor.
Higher octane = no gain.
The only thing that will provide more power would be to add boost.
If that didn't convince you, then maybe Ford engineers will. Here is a statement right out of the manual:
3.5L V6 EcoBoost™ engine
Your vehicle is designed to run on regular fuel with an octane rating of
87 or higher. For best overall performance, premium fuel with an octane rating of 91 or higher is recommended. The performance gained by using premium fuel will be most noticeable in hot weather or in severe duty applications such as towing a trailer.
#34
BS - Point me to the part number for the sensor that checks octane levels.
The ECU does a knock check. If there is no detonation it's not going to pull timing. It's called a knock sensor.
Higher octane = no gain.
The only thing that will provide more power would be to add boost.
The ECU does a knock check. If there is no detonation it's not going to pull timing. It's called a knock sensor.
Higher octane = no gain.
The only thing that will provide more power would be to add boost.
The same concept allowed the '09-'10 models to get an extra 10HP and 25 lb-ft of torque on E85.
Now, if you would kindly remove your foot from your mouth so that you can eat your crow, it would be greatly appreciated. Thank you!
#35
As I said in my first post.
IF THERE IS NO DETONATION WITH 87 THERE WILL BE NO GAIN FROM ANY HIGHER OCTANE.
Meaning if the engine is running with full timing and not pulling any.... NO GAINS.
And to the manual comments...
"The performance gained by using premium fuel will be most noticeable in hot weather or in severe duty applications such as towing a trailer."
Meaning that it might pull timing while HOT or Towing running 87 octane. Key word being MIGHT. Not normal every day driving.
You guys are kidding yourself if you think you're going to gain anything from higher than 87 octane.
IF THERE IS NO DETONATION WITH 87 THERE WILL BE NO GAIN FROM ANY HIGHER OCTANE.
Meaning if the engine is running with full timing and not pulling any.... NO GAINS.
And to the manual comments...
"The performance gained by using premium fuel will be most noticeable in hot weather or in severe duty applications such as towing a trailer."
Meaning that it might pull timing while HOT or Towing running 87 octane. Key word being MIGHT. Not normal every day driving.
You guys are kidding yourself if you think you're going to gain anything from higher than 87 octane.
#36
As I said in my first post.
IF THERE IS NO DETONATION WITH 87 THERE WILL BE NO GAIN FROM ANY HIGHER OCTANE.
Meaning if the engine is running with full timing and not pulling any.... NO GAINS.
And to the manual comments...
"The performance gained by using premium fuel will be most noticeable in hot weather or in severe duty applications such as towing a trailer."
Meaning that it might pull timing while HOT or Towing running 87 octane. Key word being MIGHT. Not normal every day driving.
You guys are kidding yourself if you think you're going to gain anything from higher than 87 octane.
IF THERE IS NO DETONATION WITH 87 THERE WILL BE NO GAIN FROM ANY HIGHER OCTANE.
Meaning if the engine is running with full timing and not pulling any.... NO GAINS.
And to the manual comments...
"The performance gained by using premium fuel will be most noticeable in hot weather or in severe duty applications such as towing a trailer."
Meaning that it might pull timing while HOT or Towing running 87 octane. Key word being MIGHT. Not normal every day driving.
You guys are kidding yourself if you think you're going to gain anything from higher than 87 octane.
The manual says most noticeable in hot weather and towing...that doesnt mean that in normal driving conditions there wont be any performance increase, it means that they will simply be less noticeable. Your arguement is fallacious by denying the antecedent.
#37
Believe what you want. I've tuned plenty of cars/trucks/bikes with turbos and superchargers and know all about how to make HP. I can tell you without a doubt adding higher octane to a factory stock tune isn't going to do anything but burn a hole in your pocket.
If you want to prove me wrong take it to the dyno and show me the difference.
If you want to prove me wrong take it to the dyno and show me the difference.
#38
Believe what you want. I've tuned plenty of cars/trucks/bikes with turbos and superchargers and know all about how to make HP. I can tell you without a doubt adding higher octane to a factory stock tune isn't going to do anything but burn a hole in your pocket.
If you want to prove me wrong take it to the dyno and show me the difference.
If you want to prove me wrong take it to the dyno and show me the difference.
#39
Believe what you want. I've tuned plenty of cars/trucks/bikes with turbos and superchargers and know all about how to make HP. I can tell you without a doubt adding higher octane to a factory stock tune isn't going to do anything but burn a hole in your pocket.
If you want to prove me wrong take it to the dyno and show me the difference.
If you want to prove me wrong take it to the dyno and show me the difference.
And, Expy03 makes a good point, it is possible that the the engine is tuned for 91 octane and is being timed back.
#40
Took me a bit, but I found the link. The Ford Engineer stated that the new 6.2 will see a power improvement with the use of higher octane. So if the 6.2 has the ability, then it makes since why the ecoboost would also.
http://www.ford-trucks.com/forums/92...ml#post8833938
http://www.ford-trucks.com/forums/92...ml#post8833938
#42
For what it's worth, the 2011 Mustang sales pamphlet mentions that fuel mileage ratings were calculated using 91 octane fuel. My son is running 87 octane Conoco in his '11 3.7L V6 and has a best of 35 mpg highway with cruise set at 70 mph. That's above the 31 mpg it's rated at.
I run 93 octane Shell in the summer month's in my '94 Gen. 1 Lightning and 89 octane in the winter month's. It will pre detonate if I run 87 octane. It is mostly stock with timing set at factory spec's.
I run 93 octane Shell in the summer month's in my '94 Gen. 1 Lightning and 89 octane in the winter month's. It will pre detonate if I run 87 octane. It is mostly stock with timing set at factory spec's.
#43
Fact: Higher octane means the park can be advanced more which provides more power.
If you don't need the power, then you gain efficiency by using a lower percentage of available power.
That said, 500 or 1000 miles is too low to learn much as the this engine processor (and trans too) are fine tuning the fuel and spark maps as the engine mechanical parts break in. It seems to take about 5k miles for today's engines to get to optimal power and fuel economy.
#44
Believe what you want. I've tuned plenty of cars/trucks/bikes with turbos and superchargers and know all about how to make HP. I can tell you without a doubt adding higher octane to a factory stock tune isn't going to do anything but burn a hole in your pocket.
If you want to prove me wrong take it to the dyno and show me the difference.
If you want to prove me wrong take it to the dyno and show me the difference.
The point is, the new factory tunes from Ford are optimized to take advantage of higher octane fuel if it is present. If it is not present, it will run fine on '87, just with less power, and potentially less fuel economy.
#45
I will believe Ford over you, as I would guess they know their engines better than a shadetree tuner. How many '11 F150's have you tuned to know all of this about them again?
The point is, the new factory tunes from Ford are optimized to take advantage of higher octane fuel if it is present. If it is not present, it will run fine on '87, just with less power, and potentially less fuel economy.
The point is, the new factory tunes from Ford are optimized to take advantage of higher octane fuel if it is present. If it is not present, it will run fine on '87, just with less power, and potentially less fuel economy.