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C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Jun 6, 2006 | 09:44 PM
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dacbobc4's Avatar
dacbobc4
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Default speedometer
Is there anyway the speedometer can be adjusted? I bought my 95 and it had 20" tires/wheels on it. I changed them to 17" (original size) but my speedometer is at least 18 mph off. Also it throws the milage off.
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Old Jun 6, 2006 | 11:04 PM
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Yes, you can reprogram the PCM to adjust the speedo.
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Old Jun 7, 2006 | 09:32 PM
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Where can I go to find someone who can do it?
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Old Jun 8, 2006 | 03:35 PM
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expensive for just this:

http://www.fastchip.com/

or HYPERTECH Programmer III tool.
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Old Jun 8, 2006 | 06:04 PM
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Originally Posted by dacbobc4
Where can I go to find someone who can do it?
If you live near St. Louis. I'll do it, no charge.


-Mike
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