Pontiac GTO 2004-2006 The Modern Goat

Programing for gears

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Old 06-10-2010, 09:06 PM
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Staging Lane
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Default Programing for gears

Does any one know if the diablo tuner can calibrate speedo for new gear ratio (3.91,4.10). I know you can do it for different tire sizes. I'm thinking about putting 3.90's in.
Old 06-11-2010, 09:56 AM
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I don't think it needs it as long as you didn't change the tire diameter. Speedo runs off the wheel speed sensors i believe.
Old 06-11-2010, 02:28 PM
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You need HP tuner to do it.




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