JMS PedalMax

[theredmeadow]

since the signal is amplified will this eventually ruin or burn out the throttle body?

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[redline727]

since the signal is amplified will this eventually ruin or burn out the throttle body?

The signal doesn't go directly to the throttle body. It goes to the PCM and the PCM commands the throttle. The voltage is still the same range it just sends a higher voltage signal earlier. These numbers aren't accurate but for example let's say throttle % 0-100 was equal to 0-5 volts. And in normal mode 10% pedal actuation would send .5 volt to the PCM and it would command 10% throttle from the the throttle body. Now with the pedal max or Sprint Booster that same 10% pedal actuation is now actually sending a amplified signal. Again I don't know the exact number but let's say it is now sending 1 volt instead of
.5 so now the PCM is going to command for 20% throttle from the throttle body. Tests I have read show the pedal is dead after about 80% pedal actuation, meaningwhen you give it 80% pedal the PCM is commanding 100% throttle already. So however all the math actually works out I don't know, but that should get you the idea of how it works. Now also keep in mind if you have a premium package the driving modes compound these calculations as Sport + mode already commands more throttle per pedal...

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[theredmeadow]

The signal doesn't go directly to the throttle body. It goes to the PCM and the PCM commands the throttle. The voltage is still the same range it just sends a higher voltage signal earlier. These numbers aren't accurate but for example let's say throttle % 0-100 was equal to 0-5 volts. And in normal mode 10% pedal actuation would send .5 volt to the PCM and it would command 10% throttle from the the throttle body. Now with the pedal max or Sprint Booster that same 10% pedal actuation is now actually sending a amplified signal. Again I don't know the exact number but let's say it is now sending 1 volt instead of
.5 so now the PCM is going to command for 20% throttle from the throttle body. Tests I have read show the pedal is dead after about 80% pedal actuation, meaningwhen you give it 80% pedal the PCM is commanding 100% throttle already. So however all the math actually works out I don't know, but that should get you the idea of how it works. Now also keep in mind if you have a premium package the driving modes compound these calculations as Sport + mode already commands more throttle per pedal...

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awesome! :hail: that was a great explanation and now I know!

 

[redline727]

awesome! :hail: that was a great explanation and now I know!

Welcome, this is how it was explained to me and what I took from the articles I read of people testing how these devices actually work. I feel I got a pretty good handle on it, but I'm sure someone smarter than me could probably explain it in more accurate detail. I think the common misconception is that there is an actual delay in the signal that these devices are somehow correcting/improving. But that is not the case. It just allows us to be more aggressive with the throttle without having to be so aggressive on the pedal.

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[plc268]

If you happen to have an obd2 scan tool or something like the ngauge, you can see for yourself how the pedalmax alters throttle position... assuming you have the knob installed. Actuate the pedal with the pedalmax, read the pedal position gauge, turn the pedalmax on and you'll see the new position.

Someone smarter than me could probably graph it out and visually show the difference the pedalmax makes.

 

[theredmeadow]

I appreciate your answers as I have a better understanding of it all now. I really do like it. I know this doesn't make sense and it's probably in my head but it seems to have smoothed shifting a bit too.

 

[theredmeadow]

where did you guys mount yours? on an automatic there's not a whole lot of places underneath. It's pretty bare.

 

[redline727]

where did you guys mount yours? on an automatic there's not a whole lot of places underneath. It's pretty bare.

Here is a link to my post when I installed my Sprint Booster. I wanted it easily accessible but out of the way and immediate view.

http://www.mustang6g.com/forums/showthread.php?p=884670

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[McDoodle]

Having driven my 5.0 for a few hundred miles now, one issue I have is that the throttle pedal travel feels way too long - I'd prefer a quicker response and reach full throttle at about 75% of the current distance I need to push the throttle pedal. I've read through the posts on this thread with some interest, but I'd appreciate it if any of you guys with this system installed could confirm that the overall travel of the throttle pedal can be reduced. Does the optional adjustment switch allow you to vary the pedal travel? Thanks.

 

[Evil Minion]

Having driven my 5.0 for a few hundred miles now, one issue I have is that the throttle pedal travel feels way too long - I'd prefer a quicker response and reach full throttle at about 75% of the current distance I need to push the throttle pedal. I've read through the posts on this thread with some interest, but I'd appreciate it if any of you guys with this system installed could confirm that the overall travel of the throttle pedal can be reduced. Does the optional adjustment switch allow you to vary the pedal travel? Thanks.

Yes, that's essentially what this thing does. You press the pedal down 20%, the thing tells the ECU you pressed it 40% (for example. not real values, but you get the idea)

 

[theredmeadow]

Having driven my 5.0 for a few hundred miles now, one issue I have is that the throttle pedal travel feels way too long - I'd prefer a quicker response and reach full throttle at about 75% of the current distance I need to push the throttle pedal. I've read through the posts on this thread with some interest, but I'd appreciate it if any of you guys with this system installed could confirm that the overall travel of the throttle pedal can be reduced. Does the optional adjustment switch allow you to vary the pedal travel? Thanks.

yes I just installed mine yesterday and I barely have to touch the pedal for it to go. it takes some adjustment trying to keep it under 60 now because it's barely BARELY pressing the pedal down.

 

[McDoodle]

Fantastic. Thanks guys - this little gizmo seems to be exactly what I'm looking for :cheers:

 

[Sasuketr]

Having driven my 5.0 for a few hundred miles now, one issue I have is that the throttle pedal travel feels way too long - I'd prefer a quicker response and reach full throttle at about 75% of the current distance I need to push the throttle pedal. I've read through the posts on this thread with some interest, but I'd appreciate it if any of you guys with this system installed could confirm that the overall travel of the throttle pedal can be reduced. Does the optional adjustment switch allow you to vary the pedal travel? Thanks.

Well let me tell you one thing, when this baby set to 100% all it takes for the car to accelerate is just a little gentle touch on the gas pedal! It becomes pretty sensitive and the car feels like a different animal!

 

[Socalmustang]

^This. Buy it with the dial knob and you can see the significant difference when you leave it in stock form, then 100. It changed my driving experience.

 

[Cascadia_302]

Well let me tell you one thing, when this baby set to 100% all it takes for the car to accelerate is just a little gentle touch on the gas pedal! It becomes pretty sensitive and the car feels like a different animal!

No doubt, you do adjust to it fairly quickly though and l find it nice not having to toggle all the time as normal mode now feels somewhere between sport and track. At least for me.

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