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Discussion Starter #1 (Edited)
Im looking for some help with tapping sensor signals at the ecu for datalogging. I want to log RPM, manifold pressure, throttle position and air intake temp.

Looking at the manual:-

rpm – pin b58 IGF
Manifold pressure – pin b62 PM1
Intake air temp – pin b45 THA

R they correct?

Im a bit lost with the throttle. What’s the sub throttle?
I seem to have pins 42, 43, 63, 64 all assigned to some sort of throttle position. Which is the one I want?

Thanks in advance.
 

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Sub throttle is the the Trac Butterfly TPS sensor I believe. There is actually only one signal wire that you need to be interesed in. The 4 wires coming from the TPS are the wiper, open and closed. The wiper I believe is what you want. The rest are power, ground and a signal wire that goes to the trac computer and some other spots.
 

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Discussion Starter #3
cheers,
ive done the connections and it works to a certain extent. the readings i get from the pc r slightly less (0.1 volt) than the readings that show on my apex commander, which i dont understand, yet. the throttle voltage (pin 43) doesnt behave like i'd imagined either, ive still got alot of checking to do. i also need a lesson in complicated excel usage :)
 
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