Quote:
Originally Posted by RLNTLSS
For each shift point?
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When you enter the new gear info it will update all your shift mphs. The rpm should shift points would stay the same.
If you don't update your tune your speedo will be off which can add mileage to your car faster (not cool).
Most tuners (us included) will not charge a full tune rate just to update the gear size. In fact if we have already tuned your car and paid for the vin we would do something like that as a no charge.