Quote:
Originally Posted by cody994x4
the only mods i have rt now are a muffler only exhaust si/do and 33"tires, does this mean i need 3 custom tunes? and will the tire/gear ratio be included in the custom files or is that something ill need to do myself? i think the tire size is entered in mm's, is this correct?
thankx
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You dont really need a custom tune for those. What you can do is buy a custom 87 and custom 93 performance and keep the canned tow. The only tune that you would need to adjust the tire size would be the canned tow.