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Old 10-05-2014, 11:51 AM   #4
Marv D
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Join Date: May 2008
Location: hells training ground (aka Ariz)
Posts: 3,118
Re: 1990 TBI timing question.

If all the TBI and OBDI computer is in place,, you may not be doing yourself any favors. Intake air, Throttle position, Map/MAF/ Residual O2, and the knock sensor feedback to the computer is going to determine timing. When the computer runs out of advance or retard to get the feedback it wants,, your going to set a SES code.

I guess you could use that as your 'sanity limiter',,, keep advancing it till it sets codes,, then back off some till it doesn't.

But that just doesn't sound like a wise move to me.
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