Can the "Speed Limiter" on a 2006 XJ8 be bypassed???
#1
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I found out that my 2006 XJ8-L has a speed limiter that limits the top speed to 120-125 mph the other day when I had to chase down a dump truck that was dropping rock and broke out my windshield when we met on a bridge.
Does anybody out there know how to change the MAP to eliminate the speed limiter and not disturb the cruise control, speed-o, in-town settable speed limiter, or any other functions of the computer? If something else controls the maximum speed I would like to address that also. It would be useless to try to make the car run faster if the top speed governor/limiter function can't be changed, so I need some expert advise on how to eliminate the top speed governor. Cheers
Does anybody out there know how to change the MAP to eliminate the speed limiter and not disturb the cruise control, speed-o, in-town settable speed limiter, or any other functions of the computer? If something else controls the maximum speed I would like to address that also. It would be useless to try to make the car run faster if the top speed governor/limiter function can't be changed, so I need some expert advise on how to eliminate the top speed governor. Cheers
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Last edited by Terry H; 09-05-2016 at 07:26 PM.
#2
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I found out that my 2006 XJ8-L has a speed limiter that limits the top speed to 120-125 mph the other day when I had to chase down a dump truck that was dropping rock and broke out my windshield when we met on a bridge.
Does anybody out there know how to change the MAP to eliminate the speed limiter and not disturb the cruise control, speed-o, in-town settable speed limiter, or any other functions of the computer? If something else controls the maximum speed I would like to address that also. It would be useless to try to make the car run faster if the speed limiter function can't be changed, so I need some expert advise. Cheers![Icon Drink](https://www.jaguarforums.com/forum/images/smilies/icon_drink.gif)
Does anybody out there know how to change the MAP to eliminate the speed limiter and not disturb the cruise control, speed-o, in-town settable speed limiter, or any other functions of the computer? If something else controls the maximum speed I would like to address that also. It would be useless to try to make the car run faster if the speed limiter function can't be changed, so I need some expert advise. Cheers
![Icon Drink](https://www.jaguarforums.com/forum/images/smilies/icon_drink.gif)
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Terry H (10-28-2016)
#3
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Also, I have read that the Top Speed Limiter is not functional if in 5th gear. Maybe be just the XJR, but I think it is all x350's.
I think it is 155 mph that is the limit. Some are 130. I have not seen 90 in many decades.
I think it is 155 mph that is the limit. Some are 130. I have not seen 90 in many decades.
Last edited by Panelhead; 09-05-2016 at 08:53 PM. Reason: Spelling
#9
#11
#14
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Can I change the ECU to a European model from a XJ8 (say from Germany) where they run WFO on the Autobon?
#15
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http://www.jaguar.com/experience-jag...g-academy.html
Last edited by Box; 10-28-2016 at 04:52 PM.
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abonano (10-28-2016)
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