I know that changing the tire radius will cause the speedometer to report an incorrect speed, well the factory set speed. I'm not sure if it's being based off the front tires or rear tires?
Anyone know?
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2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |