PowerBoost MPG - WTH??

[mdn14]

I just went from 34.4" to a 33.2" with a weight per tire of 62 and 52 pounds respectively. I noticed that my transmission is much quicker to shift into 9th and 10th gear. I still manually downshift on the highway for hills to keep it out of boost for the best MPG's.

MPG's on the highway since swapping tires have jumped considerably, from 16-17 on a good day back up to 20-21. Around town is about the same but slightly better. I've only hand calculated one full tank of fuel since installing my new Nittos .......but I ended up with 21.2 MPG, which made me pretty happy with my decision to drop back down on my tire size.

This is very good news to hear. Cant wait to ditch my 285/65 61 lbs KO2s for some 275/65 47 lbs G3s

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[scott011422]

My most frequent trip, is 16ish rt miles of mixed back road / hwy, / city. Back road and hwy are moderately hilly. Its flat in town.

Tier 1, 87 octane. Most commonly in the 22-24 range but it has topped 30 a few times. In cold weather, often seeing 17-19. 20F, seems to be an important temp.

I suspect people who live in the flat, never really get to see the full benefits of the hybrid system. Its there as a helper, true but in rolling hills, with moderate (sub 45) speeds, I frequently get elec. only, with simultaneous charging.

Right? It always makes me giggle going up some hills without downshifting and NO BOOST.

Whats interesting is I never saw the instant MPG change on these hills. Now that I've adjusted the AFR, the Instant will drop from 20-21 to 18ish when going up these same hills, still with no boost.

 

[HammaMan]

I just went from 34.4" to a 33.2" with a weight per tire of 62 and 52 pounds respectively. I noticed that my transmission is much quicker to shift into 9th and 10th gear. I still manually downshift on the highway for hills to keep it out of boost for the best MPG's.

MPG's on the highway since swapping tires have jumped considerably, from 16-17 on a good day, back up to 20-21. Around town is about the same but slightly better. I've only hand calculated one full tank of fuel since installing my new Nittos .......but I ended up with 21.2 MPG, which made me pretty happy with my decision to drop back down on my tire size.

My 34" are nearly the lightest out there. I believe 52lbs. It's really hard for me to get good trip mileage because I'm at least +10, maybe more if I know the area where they sit or I've got a bait car ahead of me. Sometimes I'm plus 12 so highway speed is pretty much impossible to nail down. Doing 95mph at times, 82 a lot, hard to gauge it. My fuel test loop thread is about all I can really vouch for in documenting efficiency. It's representative of how I drive most of the time as well as having the 'terrain' around the foot hills of the appalachians.

 

[Lead Foot PowerBoost]

My mileage is consistently 23-25 in suburban commuting. A couple of relatively short highway trips, but also many <5 mile trips to the grocery store.

 

[Keithfro]

I got the truck in December of last year and was struggling to get 20mpg and reading all about how the temperature really affects MPG. I am pleasantly surprised and love with warmer temperatures I am consistently getting 23-25 MPG. Here is proof I got over 30mpg on a 75 mile trip! Hint it was driving down the Rocky Mountains.

 

[dafish]

At 78mph over relatively flat Interstate like I-10 or I-95 in the south, I’m still above 20mpg. I have to run in the 80’s prolonged to risk dipping below 20.
Now, ripping it down the turnpike in the morning with a good song playing, Sport Mode engaged, up on the wheel, and hitting the speed limiter with repetition I can get 14-15mpg over the 20 mile run.

It’s Rapid Red. It’s in the contract I signed ?

Hey I just go 20 running 78! Of course I had a 20mph tailwind, but it was fun to see.

Aside from tehI do know some of the f


Oh well.
??

Man, I wish you were having more success with the truck. I don’t know why I average above 20mpg with a lead foot. I do have an XLT but not for the mpg. I just ran out of money to spend lol.

I have four theory's:

As I recall, and I'm happy for somebody with detailed information to correct me, in '22 Ford deleted the E-IWE's from King Ranches and Lariats. I also believe they were left in the XLT's and etc. Of consequence I believe I'm effectively running with my front hubs "locked in" at all times and you're not.

I've driven new Powerboosts a few times since. The seem to hold EV drive to a bit higher speed and a bit longer. Perhaps it's the drag of the E-IWE, perhaps I've a weaker battery, or both.

My truck has a RAS, and it lifts the rear of the truck at least an inch. I suspect it's making me even more aero sensitive. Soon I'm taking it apart, lubing it all up, and re-adjusting it.

I have been remiss in financial sacrifices to the golf god's. As they rule over all gods whom oversee man hobbies, I'm being punished. (ok, maybe I only have 3 viable theories)

 

[HammaMan]

As I recall, and I'm happy for somebody with detailed information to correct me, in '22 Ford deleted the E-IWE's from King Ranches and Lariats. I also believe they were left in the XLT's and etc. Of consequence I believe I'm effectively running with my front hubs "locked in" at all times and you're not.

Correct, 22+ TOD trucks (lariat, KR, plat, limited) do not have front axle disconnect means.
XL, XLT, 401 tremor with ESOF have them as do 402 and raptors with their Hi-Lock TCs.
The ESOF trucks that have swapped in a TOD TC and used the appropriate 2021 TOD EIWE TCCM do have disconnect means (21-23 only, 24+ do not have a TCCM that can control the TOD and EIWEs)

I've driven new Powerboosts a few times since. The seem to hold EV drive to a bit higher speed and a bit longer. Perhaps it's the drag of the E-IWE, perhaps I've a weaker battery, or both.

My speculation is that ford has used the telemetry from earlier years to increase the initial hybrid experience. However at the same time I suspect them to scale it back via OTA as the battery ages to prevent an in-warranty batt replacement.

My truck has a RAS, and it lifts the rear of the truck at least an inch. I suspect it's making me even more aero sensitive. Soon I'm taking it apart, lubing it all up, and re-adjusting it.

I don't think you'll have any measurable aero MPG hit from simply raising the rear an inch. Level the front and/or delete the airdam and you will see a hit.

 

[dafish]

My speculation is that ford has used the telemetry from earlier years to increase the initial hybrid experience. However at the same time I suspect them to scale it back via OTA as the battery ages to prevent an in-warranty batt replacement.

Thanks. As a tangent we also own a Tesla, and I've spent considerable time diving into lion battery tech and best practices. Which explains why I never get into discussion about extracting more from the hybrid battery. For it to live it needs to be used to a moderate level. Only

 

[amschind]

Lake Jackson is Brazoria County.
My youngest is county sheriff deputy.
He's pretty easy though, so if you just explain what you are doing, I imagine you would get a brief sermon and no citation. ?

I didn't see a single soul out there. It made West Texas look densely populated.

 

[HammaMan]

Thanks. As a tangent we also own a Tesla, and I've spent considerable time diving into lion battery tech and best practices. Which explains why I never get into discussion about extracting more from the hybrid battery. For it to live it needs to be used to a moderate level. Only

The PB's batt operates around 23c so it takes a helluva beating.

 

[Snakebitten]

The PB's batt operates around 23c so it takes a helluva beating.

A great reason to introduce a larger battery in the next Powerboost. I mean they could quadruple the size and it would still be a little bitty battery in a big Ole truck. ?

 

[dafish]

The darn thing needs LiFePo4 too. By its small nature its acruing a lot of charge cycles in a hurry and LFP tolerates that much better. At a power density cost sadly. Worse, there has not been a lot of density increase, so unless they find more space....

 

[HammaMan]

The C rate our batts take, well there aren't many high C rate capable LFP. The upper bounds of them is really like 5-6c. Continual 22c hits is just bonkers. We're talking ~ 2 and a half minute full charge and discharge cycles. That's just nuts.

22c rate on a battery is truly a bonkers number. LiPo batteries in drones average half of that. 6 minute flight time on a drone is ~10c.

I was looking at making my own LFP traction battery with a system to spoof the BECM and I couldn't get it small enough to be practical due to the C rate.

 

[Snakebitten]

I can't prove it, but there's room in the existing battery enclosure for more battery than 1.5KWH

It's a truck, for crying out loud. Manufacturers stuff batteries in small Hybrids with many times more capacity than the Powerboost.

 

[HammaMan]

I believe the batt's aluminum heatsink is "healthy" to say the least.

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