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Discussion Starter · #1 ·
I am just looking for people to post their RPMs at high speeds.

140 kmph

130

120 etc

I have the Mazdaspeed CAI and exhaust.
 

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According to http://wahiduddin.net/calc/calc_speed_rpm.htm using USDM specs from MazdaUSA

140 kph = 86.99 mph = ~3125 rpm

130 kph = 80.78 mph = ~2900 rpm

120 kph = 74.57 mph = ~2680 rpm

Or, 27.8167 mph per 1,000 rpm in top gear, equals 44.7654 kph per 1000 rpm. To find for your speed,

(desired / 44.7654) * 1000

(140 / 44.7654) = 3.127 * 1000 = 3127
 
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