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conig
Dodge Dakota
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1/13/2002
18:11:22
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 Subject: look at this. may remove spd limiter
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http://forums.maxima.org/showthread.php?s=8e283347d39f332c3d66b7ad93916eec&threadid=50617
could something like this applie to our cars? I bet if you used a resistor you could trick it.
I don't know if our cars read ecu reads speed befor or after the speed limiter but if it does were in business.
tell me the wires and I'll try it.
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CW
GenIII
1/13/2002
18:34:53
|  RE: look at this. may remove spd limiter
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It might work. The Sensor signal goes from the rear diff to the ABS then if I remember correct is bussed to the PCM and the insterment cluster. If you interupt it at the PCM you loose cruise but not speedo. BUT I am not positive I will have to see the wiring diagrams. It will set a check engine light as well. Are there any sources for wiring diagrams online?
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, roadmaster active suspention
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conig
Dodge Dakota
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1/13/2002
22:08:51
| RE: look at this. may remove spd limiter
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but maybe if we could wire an adjustable potentiometer inline we could make it read say 20mph lower. that way the speed cut could be 20mph later. I don't think I'll ever take my truck much over 120 anyway lets be realistic it's a truck
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jjj
Dodge Dakota
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1/13/2002
22:49:28
| RE: look at this. may remove spd limiter
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CW,
I can try to send a page directly off my cd if it will do it. I have the 01 man. cd.
Jeff
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CW
GenIII
1/13/2002
22:58:54
| RE: look at this. may remove spd limiter
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You can't use a resistor to fool it because the sensor puts out a sin wave that is then converted to a digital bus signal. I did some thinking and you can't interupt the signal just to the PCM because it would take it off of the data bus and then you would loose all kinds of funtion including most gauges. The only way to delay it would be to program the ABS for a smaller tire if you are not running the small tires already. You could disable the speedo by unplugging the speed sensor then reading the tach and making a calculation to see what speed you are going to what the RPM reads.
Personally I am a little scared at what the aerodynamics will do at a 120+.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, roadmaster active suspention
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CW
GenIII
1/13/2002
23:01:34
| RE: look at this. may remove spd limiter
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Thanx for the offer jjj but I just remembered how the system works.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, roadmaster active suspention
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D
Dodge Dakota
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1/14/2002
00:13:07
| RE: look at this. may remove spd limiter
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Hey CW, this is off the subject, but where did
you get that black grill insert? Or is the photo
playin tricks on my eyes?
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Demon-Xanth
Dodge Dakota
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1/14/2002
00:43:13
| RE: look at this. may remove spd limiter
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What about putting in a kph speedo then calibrating it for MPH? So the PCM would be thinking kph but the speedo and odometer would be reading MPH?
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bernd
*GenIII*
1/14/2002
00:48:59
| RE: look at this. may remove spd limiter
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I'm checking my wiring diagrams on that one. Don't think it'll work as there's other factors to consider on the speed sensor...but i'll do some "playing around" with it.
1997 Dodge Dakota SLT - V6
Supercharged/Intercooled @ 10# w/Nitrous
14.55 @ 96.01mph
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CW
GenIII
1/14/2002
09:18:31
| RE: look at this. may remove spd limiter
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D: They are lund screen fronts kinda provides a blackout look I like it. Gonna get one for the bumpper as well.
Bernd: I should have said on 5 speed manual trans only because the autos steal the signal from the trans output speed sensor I think. But now you have thinking. My truck has 4WABS and it might try and steal a signal off of one of the front sensors.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, roadmaster active suspention
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mike
Dodge Dakota
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1/14/2002
12:55:58
| RE: look at this. may remove spd limiter
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i get pissed when it shut off at 120 how can you stop it from doing that
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Jon
Dodge Dakota
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1/14/2002
14:51:37
| RE: look at this. may remove spd limiter
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What about putting in a kph speedo then calibrating it for MPH? So the PCM would be thinking kph but the speedo and odometer would be reading MPH?
All a kph speedo is, is a gauge overlay (like flame gauges).
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jjj
Dodge Dakota
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1/14/2002
19:53:30
| RE: look at this. may remove spd limiter
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The metric dash is a different part not an overlay and is not interchangable. The unit of measure for the odometer is set at time of manufacture and not changeable.
Besides the speed is determined by the PCM not the speedo.
Jeff
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Demon-Xanth
Dodge Dakota
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1/14/2002
23:17:00
| RE: look at this. may remove spd limiter
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What I'm saying though, is to recalibrate it. Effectively it'd be like adding tires that are quite a bit larger in diameter and recalibrating it for those.
Basically:
100MPH real==100kph to the PCM (60MPH)==100MPH on the speedo and odometer.
This would effectively give the Dakota a 200MPH speedometer and a 185 MPH limiter. And the km/h odometer would still be accurate as a MPH odometer.
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Demon-Xanth
Dodge Dakota
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1/14/2002
23:30:02
| RE: look at this. may remove spd limiter
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Addendum:
The cruise control and ABS would most likely still work
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surferpug
Dodge Dakota
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1/15/2002
01:21:07
| RE: look at this. may remove spd limiter
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could you use those gidgets for calibrating TruSpeed when changing tire size. ie calibrate the tire size as a smaller tire than the true tire size, then the limiter would kick at higher speeds
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bernd
*GenIII*
1/15/2002
02:10:29
| RE: look at this. may remove spd limiter
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Still checking CW. (BTW: I've got a 5-speed.)
Sick and tired of racing to the speed-limiter anyway...with plenty of pedal (and HP to go). ;)
1997 Dodge Dakota SLT - V6
Supercharged/Intercooled @ 10# w/Nitrous
14.55 @ 96.01mph
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CW
GenIII
1/15/2002
09:04:45
| RE: look at this. may remove spd limiter
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Sucks when the truck is still pulling good and wham there is the limiter. I thought you had the ASE chip in your truck that eliminated the speed limiter. I will try and remember to take a look at work today.
2001 RC 4.7 5sp 9.25
Ported throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat.
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Wayne
Dodge Dakota
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1/16/2002
15:25:31
| RE: look at this. may remove spd limiter
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Doesn't the Mopar Performance PCM remove the speed limiter? Since I put mine in I have gone over 120 with no problems. CW - truck handled like a dream at that speed.
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CW
GenIII
1/16/2002
19:50:13
| RE: look at this. may remove spd limiter
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Cool I have been stuck at 120 with this truck. If I find a lonely strech of flat highway I will try unplugging the rear speed sensor and see what happens.
2001 RC 4.7 5sp 9.25
Ported throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat.
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dodgeboy
Dodge Dakota
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1/16/2002
20:48:19
| RE: look at this. may remove spd limiter
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bernd.....anyluck with the v6 rev limiter removal? emailed bgchrysler.com today to see what they could do..cam makes power to 5500 valve train is good to 6000+..and I'm stuck at 5200...doh!
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conig
Dodge Dakota
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1/16/2002
21:40:47
| RE: look at this. may remove spd limiter
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would you people please stop complaining about a 120mph speed limiter! try having one at 98 a wgile like me.
kenne-bell couldn't even eliminate my speed limiter.
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bernd
*GenIII*
1/16/2002
21:45:52
| RE: look at this. may remove spd limiter
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Dodgeboy, I put a ON/OFF switch on the wire for the speedsensor on my '97...nope, it doesn't work. :(
ASE, Mike Leach, B&G Chrysler Specialists, and KRC Performance can help remove the speed limiter (as well as many other custom programs as well).
1997 Dodge Dakota SLT - V6
Supercharged/Intercooled @ 10# w/Nitrous
14.55 @ 96.01mph
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CW
GenIII
1/16/2002
22:42:03
| RE: look at this. may remove spd limiter
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So where do you think the computer getting its signal from? I am going to have to get out the manual now.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat.
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dodgeboy
Dodge Dakota
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1/16/2002
23:59:31
| RE: look at this. may remove spd limiter
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Message:
well I dont think I'll be hitting 112 in the 1/4 for a while =P...so the spped limiter is fine. I just need to move that damn rev limiter...hard to find v6 programs..I hear ase is having trouble with the rev limiter...miss my ole 93 v6 with the MOPAR pcm.....
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bernd
*GenIII*
1/17/2002
00:16:26
| RE: look at this. may remove spd limiter
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The speed limiter is indirectly controlled by the ABS system.
1997 Dodge Dakota SLT - V6
Supercharged/Intercooled @ 10# w/Nitrous
14.55 @ 96.01mph
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CW
GenIII
1/20/2002
18:33:31
| RE: look at this. may remove spd limiter
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Hey Bernd I just had a thought yours is a '97 with the speed sensor in the rear of the trans. I think what is happening in your truck is that when you disable the speed sensor, in the trans, that the ABS is still reading speed to the computer through the speed sensor in the rear diff. So you would have to disable that sensor as well to defeat the limiter. The computer would be completely blind as to what speed it was going. My truck on the other hand all you would need to do is pull the fuse in the box for the abs and that would blind my computer. The only distraction would be the ABS light that would come on. You may have a fuse you could pull with the ABS as well.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat.
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kawzx7
Dodge Dakota
JOIN HERE
1/20/2002
19:58:38
| RE: look at this. may remove spd limiter
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So CW:
If I remove the ABS fuse on my 2000 4.7L Auto, it should remove the limiter?
I'll check it out tomorrow.
Later
Chris
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CW
GenIII
1/20/2002
21:27:09
| RE: look at this. may remove spd limiter
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Should do it. I haven't tried it yet though. Will loose things like cruise and speedo. If you know what rpm you are at, at the speed limit there are no problems.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat.
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Bruce P
Dodge Dakota
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1/20/2002
22:01:13
| BEWARE!!
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BEWARE... Those of your with AUTOMATIC trannies (45RFE)on the 4.7L engine.
The signal from the rear axle not only feeds the speedo and ABS. It is used to program the clutches within the 45RFE transmission.
SHORT EXPLANATION: The 45RFE computer constantly motitors the input shaft speed and the output shaft speed and determines the "slippage" of the clutches within the tranny. A signal is then applied to the clutch solenoids until the slippage is eliminated. Altering the signal from the rear axle (output shaft of tranny) may destroy the tranny clutches over time.
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CW
GenIII
1/20/2002
22:02:29
| RE: look at this. may remove spd limiter
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As I mentioned to Bernd earlier 5 speed trans only.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat. Working on adjustable fuel pressure with return.
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von dutch
Dodge Dakota
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1/22/2002
01:04:03
| RE: look at this. may remove spd limiter
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I dont think the ABS works anyway, I almost got in an accident on the weekend after (my fault)
I locked up my brakes and skidded about 100 feet, still look at the skid marks to prove it didnt work. Dont know if i should take it to the dealer, something tells me know way for them to really test it unless they go fast and lock up the brakes and i dont want them to do it.
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CW
GenIII
1/22/2002
08:59:32
| RE: look at this. may remove spd limiter
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You probably have rear ABS not 4 wheel ABS.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat. Working on adjustable fuel pressure with return.
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CThomp
Dodge Dakota
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1/22/2002
09:41:56
| RE: look at this. may remove spd limiter
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So what if you don't have ABS at all? I have front discs and rear drums. Mines a '00 SLT 4.7L 5spd.
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kawzx7
Dodge Dakota
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1/22/2002
09:54:50
| RE: look at this. may remove spd limiter
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Rear ABS is standard, you have it.
Chris
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