Power FC Power fc and cluster speed not matching
01-31-15, 12:19 AM
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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?
01-31-15, 02:51 PM
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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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rx8volks
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08-13-15 04:55 AM