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Top speed for '21 Powerboost

twelpo19

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Can't decide if a question or PSA. On a flat, straight, open 2 lane road in daylight I needed to pass several semis and found my '21 KR Powerboost governed to 106. Frankly the motor had a lot more to offer but the truck did not.

Has anyone had this phenomenon? Please don't lecture on needing speed to pass, if you know anything about west Texas countryside you would understand. I was surprised and want to make sure all is as designed.
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130 Ghost_Riders

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twelpo19

twelpo19

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Ghost_Riders, and there it was, thanks for sharing.

Operating as designed, and will admit a little disappointed but understand the general purpose logic - versus us out in the flat lands where 85 MPH speed limits are common and appropriate.
 

Kidder

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Can't decide if a question or PSA. On a flat, straight, open 2 lane road in daylight I needed to pass several semis and found my '21 KR Powerboost governed to 106. Frankly the motor had a lot more to offer but the truck did not.

Has anyone had this phenomenon? Please don't lecture on needing speed to pass, if you know anything about west Texas countryside you would understand. I was surprised and want to make sure all is as designed.
Every truck I've had (GM, RAM, Ford) has a governor of right around 100 mph. The tire rating, amongst other things, is the reason for the limiter.
 

Gros Ventre

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In this modern era of computer controlled ignition programming an upper limit on speed or engine rpm is just a few more lines of code...
 

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jeffcrum

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Afrankart

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PungoteagueDave

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My Super Dutys have had the same electronic limit.
 

tbinmd

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need some Z rated tires
 

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DBL R

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A tune will get rid of the top speed limiter. Then you’ll have to worry about tires. The stock hankook’s have a load/speed rating of 115t. That would be an approximate top speed of 118mph.
 

tbinmd

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You would also want to worry about brakes. It is a 6000+lb vehicle after all.
 

Dan M.

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Ford vehicles have been governed for many years now. It probably keeps knuckle heads from driving 150 mph and coming back in and claiming engine problems. :ROFLMAO:
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