Dose anyone know the ways to turn the rev limitor off and the 100 mph limitor? its for a 4.2 v6 and a 5.4 v8

 

Pretty much any programmer you buy will do that.

 

Tuners are the answer to your problems

 

do u know if you can do it with a ford programer?

 

What is a Ford programmer? You mean the computer at the dealer?

 

ya thats what i ment

 

Since they have complete Stratagies downloaded in a computer, which they then downwload to the truck, I doubt that they can mess with the speed limiter. Maybe a tech, such as Quintin, can chime in and correct me or agree with what I have stated.

 

Is the v6 a manual? If so there may be a way to shut it off.

 

yes the v6 is a manual

 

Then you can cut the vss wire on the pcm, should be a gray wire with a black stripe. It will throw a code though, if you want to do it then i would recommend putting it on a switch so you can just use the switch to disconnect the wire when you want to go that fast. You cannot do this on an automatic because it will leave the tranny hunting for gears. It will not affect any of the gauges.

 

^^^ This is such a bad and uninformed suggestion I can't believe it.

 

i work at a ford dealership and i dont believe there is anyway that it can be removed with the computers that we use

or at least i havent found a way to do it yet

 

enlighten me...

 

The most common way to remove the speed limiter and change the rev limiter is to purchase either a chip or a programmer. A chip is a module that you attach to the PCM, Engine Computer, that forces the PCM to read from the chip and not the stock programming contained in the PCM. A programmer is just that. It down loads and stores the stock program and uploads a modified program that the PCM then uses to control the engine functions. The 3 most popular brands are SCT, Diablosport and Edge. If you post an inquiry in the CHIPS section, https://www.f150online.com/forums/ch...rogramming-34/ you will get a more detailed response. Bare in mind that for what you want any of the above companies can accomplish the task. Any performance orientated individual, in order to increase the performance of their vehicle, will eventually purchase one of the above. The most common goal of a chip or programmer is to improve the vehicle's engine performance. Along with this the rev limiter is usually modified along with the removal of the top speed limiter. While Gotts2BMe's suggestion of using a switch is ingenious I would not recommend it. Some of the the engine's controls require the actual speed of the vehicle in order to properly control them. The idea of not having a clue as to what speed you are travelling is irrelevant as your speedometer most likely tops out at 100 mph or close to it. So even if you could still use the speedometer it is totally useless above 100 mph anyway.

regards

Jean Marc Chartier

 

I would not change the rev limiter, just the speed limiter.

My V6 sounds like it's going to blow up before it hits the rev limiter anyway and if you change it on your 5.4 you could grenade your torque converter.