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Posted

Hi everyone

So im soon to be getting my A70 supra running after a long build time.

Im currently looking into the wiring required to convert the speedo from mechanical cable to a full electrical system controlled by the ECU.

Currently from factory there is a speedo cable connected to a optical sensor behind the dash that has a pulsed 5V 20 tooth wheel arrangement

The gearbox sensor i have is a factory toyota item that pulses 4 times per rotation and works fine with 5V

I haven't powered up the LinkECU yet as im still sorting the last of the required wiring so i am abit unfamiliar in the functions of what the Link can do

but my question is can i use the 4pulse sender and use the link to bump it up to a 20 pulse (multiply by 5) so the dash will read correctly?

Then i can adjust the gain on the link to get a accurate speedo calibrated via gps or similar?

Thanks

Nick

Posted

Yes G4+ can do a speedo frequency out put signal. Provided your speedos requirements are within the limits of what the ecu can provide.  You say 20 pulses but over what period?  20 pulses per meter? 

Posted

HI there thanks for the reply.

Its 20 pulses per one revolution of the speedo cable

As for distance traveled by the vehicle to rotate the cable one revolution i haven't tested that yet

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