Seems like it might not be plugged in correctly with all three airflow signals. 34 is overboost and is Hz signal. That isn't related to the other two, but since you just did the airflow meter....
And you can unscrew the adjustment screw out. I have mine just under flush from Supra Sport.
http://www.cygnusx1.net/Supra/Library/EPC/291210/part.aspx?S=37110
http://www.trademotion.com/parts/1987/TOYOTA/SUPRA/index.cfm?searchText=37110-14300&siteid=213747&year=1987&make=TOYOTA&model=SUPRA&submodel=&vehicleid=1278468
That should get you in the ball park on pricing.
US sold cars had a label that said "No catalytic converter" in the 70's when they didn't have one from production. Inside door label just like the other things they stick there.
Most of the ND alternators on Toyota are very similar, and many plugs are the same. You know, if you had just swallowed the parasitic loss of the TRD/Towing Tundra fan clutch, you wouldn't need the electrics at all. I have to tell you, you should hear those fans when it is hot. The drag is quite...
I have the stock regulator, no adjustment, stock damper, stock pump. It drives like stock, until you put your foot on the floor. And it idles like it is supposed to idle. So can all of your 7MGTEs with the Lex meter and 550's. Stop taking things off the car that it "doesn't need" and watch it...
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