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DIY THROTTLE RESPONSE MOD (MUST SEE!)
08-31-2007, 02:51 PM
#131
I ♥ Acer
Join Date: Aug 2006
Location:
Posts: 1,527
RE: DIY THROTTLE RESPONSE MOD (MUST SEE!)
For those of you like me who want to give this a try but want to do it from a fresh slate and not f' up your stock unit, here is a good resource very cheap to get a unit to play with...
http://www.trademotion.com/partlocat...&siteid=213787
(Just enter part # 4R3Z-9F836-BD in the field)
http://www.trademotion.com/partlocat...&siteid=213787
(Just enter part # 4R3Z-9F836-BD in the field)
08-31-2007, 02:54 PM
#132
3rd Gear Member
Join Date: Feb 2007
Location: WA
Posts: 840
RE: DIY THROTTLE RESPONSE MOD (MUST SEE!)
ORIGINAL: kleistang
What are you proposing ?
ORIGINAL: 157db
Exactly. Thats why the travel stop works much better than the bending method.
"Open thyn eyes for the sake of being blinded by the light."
ORIGINAL: acrokat
I have a question.
By changing the angle of the brushes, we are changing the area where the brushes contact the track. My question is what happens if we adjust these brushes too far and they contact the Plates on the other side of the track. this would happen under a WOT scenario. I have modded your pic to clarify my question.
I have a question.
By changing the angle of the brushes, we are changing the area where the brushes contact the track. My question is what happens if we adjust these brushes too far and they contact the Plates on the other side of the track. this would happen under a WOT scenario. I have modded your pic to clarify my question.
"Open thyn eyes for the sake of being blinded by the light."
What are you proposing ?
I'd like to see a writeup of the spacer mod with similar detail quality as the OPof this thread. There seems to betwo viable options to accomplishing the same task - maybe.
08-31-2007, 03:00 PM
#133
Cut & Paste Expert
Join Date: May 2007
Location: NW Arkansas
Posts: 13,322
RE: DIY THROTTLE RESPONSE MOD (MUST SEE!)
One more time.
Add a stop to the travel and dont bend the brushes.
A 4-40 bolt and nut. Easily adjustable once its
installed without removing the pedal or taking
the case apart. I have had mine stopped for
months now before I joined the forum and
didnt think anyone here cared about the dead
spot in the accelerator pedal or I would have
posted the stop bolt mod.
Stop bolt modkills the WOT problem whether
there is one or not with the bending method.
I just limit where the pedal is at rest.
Add a stop to the travel and dont bend the brushes.
A 4-40 bolt and nut. Easily adjustable once its
installed without removing the pedal or taking
the case apart. I have had mine stopped for
months now before I joined the forum and
didnt think anyone here cared about the dead
spot in the accelerator pedal or I would have
posted the stop bolt mod.
Stop bolt modkills the WOT problem whether
there is one or not with the bending method.
I just limit where the pedal is at rest.
08-31-2007, 03:05 PM
#135
3rd Gear Member
Join Date: Feb 2007
Location: WA
Posts: 840
RE: DIY THROTTLE RESPONSE MOD (MUST SEE!)
ORIGINAL: 157db
One more time.
Add a stop to the travel and dont bend the brushes.
A 4-40 bolt and nut. Easily adjustable once its
installed without removing the pedal or taking
the case apart. I have had mine stopped for
months now before I joined the forum and
didnt think anyone here cared about the dead
spot in the accelerator pedal or I would have
posted the stop bolt mod.
Stop bolt modkills the WOT problem whether
there is one or not with the bending method.
I just limit where the pedal is at rest.
One more time.
Add a stop to the travel and dont bend the brushes.
A 4-40 bolt and nut. Easily adjustable once its
installed without removing the pedal or taking
the case apart. I have had mine stopped for
months now before I joined the forum and
didnt think anyone here cared about the dead
spot in the accelerator pedal or I would have
posted the stop bolt mod.
Stop bolt modkills the WOT problem whether
there is one or not with the bending method.
I just limit where the pedal is at rest.
08-31-2007, 03:07 PM
#136
2nd Gear Member
Join Date: Nov 2006
Location:
Posts: 361
RE: DIY THROTTLE RESPONSE MOD (MUST SEE!)
I made some more diagrams on what the proposed change is:
THIS IS WHAT WE START WITH:
The reason that we have a dead zone on the pedal is because the brushes are contacting the grey strip where it is on top of the brasscontact.When the brush is anywhere over the brass contact the resistance will be the same. Therefore the ECU cannot detect any travel in the pedal.
THIS IS THE GOAL:
When the brushes are relocated to a point forward of the brass contact, the resistance is measurable again. therefore we no longer have the deadzone in our pedals.
This is a tricky mod. If you do it correctly it is free. As described, this IS the cause of the dead zone in our pedals. It would make sense to correct this problem directly.
If you change the resting point on the pedal as others have described, you are effectively accomplishing the same goal by restricting the pedals ability to return to its original resting point. this is an indirect method to correct the same problem. It would be easier and potentially safer if you do not feel comfortable messing with electronic parts.
THIS IS WHAT WE START WITH:
The reason that we have a dead zone on the pedal is because the brushes are contacting the grey strip where it is on top of the brasscontact.When the brush is anywhere over the brass contact the resistance will be the same. Therefore the ECU cannot detect any travel in the pedal.
THIS IS THE GOAL:
When the brushes are relocated to a point forward of the brass contact, the resistance is measurable again. therefore we no longer have the deadzone in our pedals.
This is a tricky mod. If you do it correctly it is free. As described, this IS the cause of the dead zone in our pedals. It would make sense to correct this problem directly.
If you change the resting point on the pedal as others have described, you are effectively accomplishing the same goal by restricting the pedals ability to return to its original resting point. this is an indirect method to correct the same problem. It would be easier and potentially safer if you do not feel comfortable messing with electronic parts.
08-31-2007, 03:10 PM
#137
I ♥ Acer
Join Date: Mar 2005
Location: Boston, MA
Posts: 614
RE: DIY THROTTLE RESPONSE MOD (MUST SEE!)
ORIGINAL: howarmat
I was thinking this also when someone else mentioned it.....dont know how to test the WOT part easily though.
I was thinking this also when someone else mentioned it.....dont know how to test the WOT part easily though.
08-31-2007, 03:11 PM
#138
2nd Gear Member
Thread Starter
Join Date: Jul 2007
Location:
Posts: 227
RE: DIY THROTTLE RESPONSE MOD (MUST SEE!)
Wow nice diagram!
I just didn't do the pedal stop because it is INDEED more complicated, you must drill tap, add an a adjustment screw, make sure its not causing your idle to rev up, etc. This is 3 nuts, 5 screws, and a pair of pliers. It honestly took me 20 minutes the first time, AND THEN I took it all apart again to take pics, which took 15 minutes TOTAL.
You can't screw this up, as long as you don't bend the wires off, and you simply flatten the bend in them, put the cover back on, and drive! The ECU will calibrate itself for any variance in the resistance, so your bends don't have to be exact, or perfect, they just need to move the brushes a millimeter or so.
I just didn't do the pedal stop because it is INDEED more complicated, you must drill tap, add an a adjustment screw, make sure its not causing your idle to rev up, etc. This is 3 nuts, 5 screws, and a pair of pliers. It honestly took me 20 minutes the first time, AND THEN I took it all apart again to take pics, which took 15 minutes TOTAL.
You can't screw this up, as long as you don't bend the wires off, and you simply flatten the bend in them, put the cover back on, and drive! The ECU will calibrate itself for any variance in the resistance, so your bends don't have to be exact, or perfect, they just need to move the brushes a millimeter or so.
08-31-2007, 03:21 PM
#139
4th Gear Member
Join Date: May 2006
Location: Nutley NJ
Posts: 1,207
RE: DIY THROTTLE RESPONSE MOD (MUST SEE!)
Idon't understand how so many people can't understand this concept. It is very simple and ingenius. I always wanted to rip that thing appart to see how it ticks. It reminds me of the old RC car mechanical speed controllers. We are simply adjusting the "trim" of the throttle to increase the point of action.
Here is a pic of a mechanical speed controller so you can see the similarities:
Almost all electrical applications use similar devices to this...for example; a power drill, or even the volume **** on a radio.
Here is a pic of a mechanical speed controller so you can see the similarities:
Almost all electrical applications use similar devices to this...for example; a power drill, or even the volume **** on a radio.
08-31-2007, 03:25 PM
#140
4th Gear Member
Join Date: Jan 2006
Location: NC
Posts: 1,138
RE: DIY THROTTLE RESPONSE MOD (MUST SEE!)
ORIGINAL: acrokat
I made some more diagrams on what the proposed change is:
THIS IS WHAT WE START WITH:
The reason that we have a dead zone on the pedal is because the brushes are contacting the grey strip where it is on top of the brasscontact.When the brush is anywhere over the brass contact the resistance will be the same. Therefore the ECU cannot detect any travel in the pedal.
THIS IS THE GOAL:
When the brushes are relocated to a point forward of the brass contact, the resistance is measurable again. therefore we no longer have the deadzone in our pedals.
This is a tricky mod. If you do it correctly it is free. As described, this IS the cause of the dead zone in our pedals. It would make sense to correct this problem directly.
If you change the resting point on the pedal as others have described, you are effectively accomplishing the same goal by restricting the pedals ability to return to its original resting point. this is an indirect method to correct the same problem. It would be easier and potentially safer if you do not feel comfortable messing with electronic parts.
I made some more diagrams on what the proposed change is:
THIS IS WHAT WE START WITH:
The reason that we have a dead zone on the pedal is because the brushes are contacting the grey strip where it is on top of the brasscontact.When the brush is anywhere over the brass contact the resistance will be the same. Therefore the ECU cannot detect any travel in the pedal.
THIS IS THE GOAL:
When the brushes are relocated to a point forward of the brass contact, the resistance is measurable again. therefore we no longer have the deadzone in our pedals.
This is a tricky mod. If you do it correctly it is free. As described, this IS the cause of the dead zone in our pedals. It would make sense to correct this problem directly.
If you change the resting point on the pedal as others have described, you are effectively accomplishing the same goal by restricting the pedals ability to return to its original resting point. this is an indirect method to correct the same problem. It would be easier and potentially safer if you do not feel comfortable messing with electronic parts.