Power fc and cluster speed not matching
I made some logs this summer and realized that when my cluster indicates 100 km/h my power fc reads 93 km/h. the car is a jdm fd3s with (4.30 gear). Is there a setting for this or is it mechanicle?
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Originally Posted by FDKayzer
(Post 11863700)
I made some logs this summer and realized that when my cluster indicates 100 km/h my power fc reads 93 km/h. the car is a jdm fd3s with (4.30 gear). Is there a setting for this or is it mechanicle?
Best to borrow a phone with GPS data or portable GPS for a car to test with. Run about 10 miles on a flat straight road for the test. My FD has .806 5th gear, 3.909 diff, with 255/40-17 tires. My results with a GPS were: speedometer at 70 is really 71, at 80 is really 82. Odometer reads 4.2% low. I never rely on the PFC for speed or compared since GPS is more accurate. |
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