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Speedo won't go above ~110

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Old 02-10-2009, 10:33 AM
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Default Speedo won't go above ~110
No matter how fast the car goes the speedo won't go above 110, any particular reason?
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Old 02-10-2009, 12:08 PM
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Is it a V6 Fbody? If so, that's the limit set in the PCM.
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Old 02-10-2009, 12:26 PM
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Originally Posted by ROCNDAV
Is it a V6 Fbody? If so, that's the limit set in the PCM.
Nah it's a 98 Z28. How does the speedo work on these cars? Off the speedo sensors at the rear wheels?
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Old 02-10-2009, 01:53 PM
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If it originally came with "H" rated tires - then the speed limiter was set at the factory for 118.
You sure its not cutting out at 118 instead of 110???
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Old 02-10-2009, 02:03 PM
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ya it's not cutting out it continues to accelerate, i've had it over 130 on the dyno and with the gps. I've logged it with hp tuners and u can see the computer does log anything greater than like 115, no matter how fast ur going
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Old 02-10-2009, 02:46 PM
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oh, I didn't read the original post correctly. So you can go faster, but its just not moving the needle past 110.

I know there is a speed sensor on the tail housing.
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