The wide band that SVXFiles and Mychailo both have (okay, so I've still got Mychailo's  ) both have datalogger features. If you go back and check some of Mychailo's posts, you'll see he was able to measure MAF voltage vs rpm. There really shouldn't be any reason why you can't tap into any of the lines coming out of the ECU (as long as their voltage levels are sufficient).
-Bill
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Retired NASA Rocket Scientist
Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023
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'92 Fully caged, 5 speed, waiting for its fully built EG33
'92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension
'92(?) Laguna, 6 spd and other stuff (still at OT's place)
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