Also, I'm not sure how it works with the NA's, but in order to set the base timing on these cars, you have to jump the diagnostic box. I am not sure which pins it is, but it's gotta be somewhere here on the forums. If all of your timing inputs check out, then I would look at the TPS or the MAF sensors.
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'91 Turbo Targa 5 Spd.
'87 Corolla GT-S 5 Spd
'91 Accord Daily Driver 5 Spd
Soon to be rebuilt (All to some extent)
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