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Old 06-17-2022, 05:00 AM   #25
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Join Date: Nov 2021
Location: Webster NY
Posts: 69
I'm only getting 115mph on the straight before the bus stop. The 944 are at 128.
And I'm at 6200 rpm so I think my gearing is too tall.
So I would like to change the final ratio (lower, high numerically). Does any one know of a source for a ring and pinion for the ZF5HP19 Tip?
Or what Audi or VW ZF5HP19 with lower final drive will swap into the 2.7L Boxster?
If I change the final ratio I think I also need to re-calibrate the TCU trans speed sensor as it will not agree with the wheel speed sensor input and that could cause issues. I think.
Any one know for sure?
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