turbo speed sensor setup | AEM
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peej47
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turbo speed sensor setup

i can't seem to find what the settings should be for a borg warner speed sensor anywhere. i've seen people do some calculations based on blade numbers but i'm not following. i have a borg efr 9274 using their turbo speed sensor wired into the infinity. any help or direction would be appreciated. thanks

AEM_NS
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Joined: 06/06/2014 - 09:31
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peej47
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Last seen: 4 months 4 weeks ago
Joined: 01/13/2019 - 10:38
i've read both those forums

i've read both those forums but i'm not understanding what my multiplier is supposed to be. it's set at 40 like in the snapshot but what is it supposed to be. 8? 

AEM_NS
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Last seen: 12 hours 21 min ago
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Don't over think it and just

Don't over think it and just follow the instructions in the wizard. Take 60 and divide it by the number of pulses per revolution. If turbo has 14 blades and speed sensor divides frequency by 8 then you get Turbo Speed Multiplier = 60/(14/8) = 34.285.

To check this, follow the example in the BW Turbo Speed Sensor instructions.

Says right there that 100,000 rpm = 2917 Hz.  So take 2917 Hz and times it by 34.285 multiplier and you get 100,009 rpm.