Can I wire speed sensor direct to ecu for launch control feature

Discussions concerning the M7790 cpu

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jj205mi
 

Posts: 20
Joined: Tue Aug 23, 2016 1:20 am

Re: Can I wire speed sensor direct to ecu for launch control feature

Post by jj205mi »

Nothing coming on in consult view when the wire is earthed,

Yep tried at idle 800ish rpm

I had the launch, flashing, and switched box ticked

It’s strange as it was working, I’m guessing something ok the board it toast...
jj205mi
 

Posts: 20
Joined: Tue Aug 23, 2016 1:20 am

Re: Can I wire speed sensor direct to ecu for launch control feature

Post by jj205mi »

If I select them all and upload to the ecu the light flashes and launch is active, but cannot deactivate it. So need to uncheck the box and upload again.
Matt
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Re: Can I wire speed sensor direct to ecu for launch control feature

Post by Matt »

That is strange. Watch the button status pane. If you are not 'in sync' with the ECU then it will not upload changes when you change things

You must download, and then make (and apply) changes

Otherwise they will all take effect next time you upload (and then burn when finished)
OMG70
 

Posts: 15
Joined: Mon Jan 06, 2020 3:41 pm

Re: Can I wire speed sensor direct to ecu for launch control feature

Post by OMG70 »

Been doing some research on how to convert the Hall effect speed sensor on gearbox to wire to the ECU vehicle speed sensor input .


Found this online . Figured I would give it a go , will let you know the outcome .
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OMG70
 

Posts: 15
Joined: Mon Jan 06, 2020 3:41 pm

Re: Can I wire speed sensor direct to ecu for launch control feature

Post by OMG70 »

Another option I have found is this gps speed sensor that has a Tacho output . I don’t know the ecu speed Input so don’t know 100% if this would work ? Maybe Matt can confirm please

In order to use this sender as a speedometer sender, your speedometer must can setup pulses/mile to 16000, if your speedometer does not have this parameter, you can NOT use this GPS sender.
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