top speed limiter?

[vashxj]

so has anyone messed around with there speed limiter? my gear ratios are too high and I have smaller tires so the pcm shuts me down at like 90mph now cuz the speedo says about 120 (not sure but the needle touches the odometer). im thinking I can just get a bigger speedo gear to trick it into thinking its slower so I can get above 120 or even unplug the speed sensor, I haven't tried it yet but I will when I get a little time.

[jeepxj3]

Do you have the correct speedo gear in now to make the speedo correct and accurate with your current gears and tires? If not, you seem to be off about 30% and need about a 30% ?bigger speedo gear. ECU tuning can raise the speed limiter.

[FlyinRyan]

I can change that....

[SilverXJ]

Why not just change the speedo gear?

[IH 392]

What RPM does your TACH say when it shuts down?

[vashxj]

I ordered a bigger speedo gear, and ryan that's good to know I will need you soon anyway with the s/c. right now it is topped at about 4700 rpm in 4th gear. just seeing if anyone has tried it already

[Torqsplit]

I'm on OBD1 so I have to improvise. For my dyno runs i just reach underneath and unplug the speed sensor at the tail shaft. This is only a temporary fix as it disables the speedo and the affects how the IAC-motor responds. Did allow me to turn 4th gear to redline for nice straight math(1.00:1). This however spun my 31's to 147mph at 5200rpm. Just be careful. *Do this completely at your own risk!*