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Any thoughts on this AFR Target Table and Map?

Practical Standalone Tuning

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Hello everyone. I am using an AEM Series 1 in my 1989 Toyota Supra Turbo. I would like some opinion on values for this sample AFR Target table. I got it from a fellow Supra owner. Aside from this one, most of the Target tables that I've seen tend to have everything about 0 PSI (100Kpa) on the richer side. But this Target map does that mostly for the areas where the turbo would be operating the most. Therefore, the values below 1600 RPM are still relatively lean, under the assumption that the turbo would be creating positive boost pressure at those RPMs.

I've attached 2 pictures. One of the values in AFR and the other of the Map for that same table.

This is for a car running 93 Octane pump gas.

Attached Files
  • O2-Feedback-target-Map-shape-93-Octane.jpg
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  • O2-Feedback-target-values-in-AFR-93-Octane.jpg
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It looks like a good starting point. A bit rich in the high rpm region. But you can always lean out during the tune.

How much boost do you plan of running? What turbo?

Thanks for the reply. Since I'm running 93 Octane pump gas, and a PT-61 turbo, the goal is to run somewhere between 15 to 20 PSI. At some point I'd like to change the turbo to a 6266 or 6466. This is a streetcar, not a track build.

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