Can max speed be increased with forscan

[hamd1786]

Man it's weird, somebody asked
"Can max speed be increased with forscan"
and all these folks chimed in with their 2 cents about whether or not you should go fast while completely not answering the question.
You don't know this person, you don't know how their truck is set-up, you don't know what tires they have, and you don't know why they might want to go over the 105mph speed limit.

But no, as of right now nobody has found a way to remove it with forscan.

Honestly true.
Also 105 mph ? Is fast ? 3500 duallys didn’t get the memo in Texas; I have regularly been passed by dually and HD trucks in my Camaro doing 100 on the highway.

also 105? Mine is locked at 100 - but Karens here will chime oh 100 is too fast

just get tires rated to higher speed and go to tuner; try a small town dealer they mighteven do it

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[DarkSkyForever]

Yes, it should be possible.

You'll probably want to have a look at the PCM, specifically these two addresses:

7E0-163-01
7E0-163-02

For similar reference on Transit Vans: https://forscan.org/forum/viewtopic.php?t=15451

 

[Fordphanatic]

Man it's weird, somebody asked
"Can max speed be increased with forscan"
and all these folks chimed in with their 2 cents about whether or not you should go fast while completely not answering the question.
You don't know this person, you don't know how their truck is set-up, you don't know what tires they have, and you don't know why they might want to go over the 105mph speed limit.

But no, as of right now nobody has found a way to remove it with forscan.

Thank you the First to actually answer my question.

 

[AutonomousHybridF150]

Yes, it should be possible.

You'll probably want to have a look at the PCM, specifically these two addresses:

7E0-163-01
7E0-163-02

For similar reference on Transit Vans: https://forscan.org/forum/viewtopic.php?t=15451

Im looking at these areas, and the only thing I see is:

7E0-163-02
Speed_Limiting_Features (SLF)
0 - SLF Reserve for Blank
1 - SLF Less ASL, Less ISA
2 - SLF With ASL, Less ISA
3 - SLF With ASL, With ISA

Does anyone know specifically what needs to be changed to remove the 105 speed limiter in the 2021 F150.

I read the other thread, and it doesn’t really explain which lines get modded in the as built data for their Transit. It appears they used a “reset speed limiter” within the selectable menu. I highly doubt it is that easy to remove the 105 MPH speed limiter.

Could someone else chime in that knows more about this area of FORScan? I swear this was already discussed in the FORScan mod thread, and I believe they advised this wasn’t possible.

 

[DarkSkyForever]

I read the other thread, and it doesn’t really explain which lines get modded in the as built data for their Transit.

(OLD) 7E0-163-01: 0000-7900-00D4
(NEW) 7E0-163-01: 0000-0100-004D

(OLD) 7E0-163-02: 0111-0084-D9C3
(NEW) 7E0-163-02: 0111-0080-D983

Is apparently what they changed.

 

[BRDVPRA]

I know that tuners can remove speed limiting , Ive read that if you want to go 125+ the drive line needs to be upgraded,

This is what I read as well. The driveline is so long on all the trucks it is the limiting factor for speed.

 

[RickBullotta]

Newer F-150s are waaaaay underbraked for speeds much higher than rated.

 

[AutonomousHybridF150]

Newer F-150s are waaaaay underbraked for speeds much higher than rated.

Again, the brakes on this truck are better than my 1999 GT in so many ways, and it went 145 MPH, stock.

Current tests show the Powerboost braking 60 - 0 in 138 Feet, and old tests for the 99 GT were 60 - 0 in 120 Feet.

Since the Powerboost weights nearly double that of the 99 GT Coupe Manual, I would say that the Powerboost brakes are superior to all Truck brakes before it, and can stop double the weight in just 18 extra feet.

I’ll go check out old Lightning stopping distances just for fun. BRB.

 

[Jeff1024]

Tire ratings are based upon endurance testing of a set timeframe, which is far greater than a short top speed run.

T Rated tires are listed for a max speed of 118, so I feel that driving 118 MPH in a 2021 F150 would probably be fine for a short burst.

Its not as if we are tracking the truck and keeping it at 118 MPH for 2-3 hours.

My understanding is that the two piece driveshaft carrier bearing can’t handle the imbalance at high speeds. So, if you want a valid reason the F150 shouldn’t go over 105, then it should really be the driveshaft catapulting your driveline into oblivion, not the T rated tires which can in fact handle 118 MPH.

Came here to say this. It's less about the tires and more about the fact that its a large driveshaft that Ford didnt spend the time and money to balance well enough that you can drive your truck 140mph.

If you want to go fast buy a mustang not a 6,000lb brick of a truck that handles like well a truck.

 

[RickBullotta]

Again, the brakes on this truck are better than my 1999 GT, and it went 145 MPH, stock.

Could well be. I'm just saying that on my '21 Powerboost (which is about 600 lbs heavier than a non-Powerboost), the brakes are undersized compared to other modern vehicles. Unfortunately, there aren't any upgrades available for the rear brakes available yet.

 

[AutonomousHybridF150]

Folks, the numbers from the 2004 Lightning on Ford’s own page shows the Lightning braking at 60-0 in 130 feet.

2021 Powerboost stops 8 feet further in the same 60 feet test.

Can someone please substantiate their claims of the Powerboost or 2021 F150 being under braked. Because everything I am reading appears to show different.

 

[AutonomousHybridF150]

In my short lifetime I’ve driven cars and trucks that were so overpowered and underbraked for what I did with them, and I’m still here. So it is frustrating when people that have never went 160MPH in a vehicle try to explain to others how the F150 PB is somehow underbraked when compared to other rival competitors.

When the tests actually show that the F150 does have the best Truck brakes when compared to the others.

The problem is that folks are comparing Z06 and Audi braking distances to a TRUCK. The other problem is that we have a bunch of arm chair engineers in here that have never driven faster than the speed limiter on their current ride, trying to tell me and others why we can’t achieve that. Which makes me LOL hardcore.

I’ve changed 2 piece OEM F150 drive shafts to one piece alum shafts simply for the reason of removing the speed limiter and driving faster safely.

Weight doesn’t mean as much these days, so maybe everyone should go research supercar weights, because the RR and Bentleys are almost as heavy as these trucks.

Bentley Continental Supersports : 5280 LBS

 

[AutonomousHybridF150]

 

[Pedaldude]

The Duesenberg weighed three tons, used drum brakes, a solid front axle, had worse aerodynamics than a barn door and was built when the majority of U.S. roads were dirt or gravel. They were able to go 119MPH with their 420 cubic inch DOHC straight 8 and 3 speed manual gearbox with suspension barely more sophisticated than a horse carriage.

About the only street legal car you could get that would be faster was a Bugatti, however Ettore was against hydraulic brakes and preferred them cable operated because hydraulic brakes didn’t help his cars go any faster

Americans of the 1930’s would be appalled by all the pearl clutching over wanting to go a few MPH faster.

You all sound like the people who were afraid of heart attacks or women’s uteruses falling out if they went too fast on steam locomotives.

 

[AutonomousHybridF150]

LOL!

Thank goodness there is someone here from the old school. Or just someone with a little reasoning.

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