The X3 should have an option to change axle ratios along with fuel and timing trims. You won't have as many options as you would with the PRP software, but you can still change basic parameters.
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Black 2003 Cobra
Ported, Upper/Lower Pullied, Sprayed......going corn
Slow
2010 BMW 335i JB4-G5iso, DCI, E85
2002 GSX-R600 Full Bolt-ons
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