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| Gryphon Programmer Edge Product has discontinued the Edge Evolution 2, but we still provide support and tuning for it. If you have a question or comment relating the Gryphon (or Evolution) programmer, post it here. |
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#1
Thu, October 15th, 2009, 06:36 PM
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Tire Size
How the heck do you know what the tire size setting is that is programmed into a custom tune?
My speedo has been off since day one with my custom tunes. It's not really an problem as I think I've been able to adjust the size to one that works. But when I recently decided to swap to my custom tow tune (I'd never tried it), I couldn't remember what the size needed to be. My tires are 275/70-18 and the unit always shows 2669 in either of my 2 custom tunes (tow and performance). I set the size to 2566, which is what is the number I get when I use the calculation in the Gryphon manual (yes I actually use it). After the PCM has been programmed and I go into the custom tune mode, it still shows the 2669. Maybe this is normal, but it seems odd I can't verify my setting. Any suggestions? Thanks
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Henry 2011 F150 FX4 5.0, 3.73... 
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