I have looked and did not find clear answers. Are products like Aimsport or Stack able to get data directly from the canbus, Or is the old ODB too slow, or good for things like temperature, but not RPM?
Data Acquistion
#1
Posted 07-25-2017 07:12 PM
#2
Posted 07-25-2017 08:12 PM
#3
Posted 07-25-2017 08:25 PM
Only useful CAN data in these vintage cars is coolant temp and battery voltage. Just the standard federal channels and 1hz max.
Thanks, that was the impression I was getting, but was hoping different.
#4
Posted 07-26-2017 11:22 AM
For RPM output there's the pin on the diagnostic block (where you short the fuel pump) that sends the signal from the coils (I'm guessing it's the coils).
Most of the daqs can receive that signal natively with the right interfaces. I definitely know Traqmate (RIP) can with the proper 25-pin adapter plugged in & wired to the block.
#5
Posted 07-26-2017 05:10 PM
#6
Posted 07-27-2017 08:13 AM
There are/were two types of adapters for "RPM only": one with an included wire (to be crimped onto a wire from the car) and the other being a series of screw-down lugs to hold the wire.
Lug-based one:
Integrated wire one:
You run a wire from the "IG-" port on the diagnostic port:
#7
Posted 07-28-2017 07:49 PM
#8
Posted 07-31-2017 11:04 AM
Have never pulled one apart to learn the pinouts or if there are any other internal electronics to support the signal into the DAQ.
Best of luck if you do decide to tackle it. Traqmate is no more as far as I know.
#9
Posted 07-31-2017 07:07 PM
I opened one up a while back to look and it has components inside, decided it was easier to buy one than trace out what they are for, although I suspect mostly used to condition the input and protect from spikes.
Rich
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