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Author Topic: Please help with tuning AFM on a non Spec Miata  (Read 2283 times)
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« on: December 05, 2014, 09:16:06 PM »

Long Story but I removed the turbo, aftermarket ECU etc. from my 91 Miata and slapped on the beleaguered AFM, intake and other stuff.  The car is nearly all stock now.

I kept the wideband on board and I’m looking to optimize the AFM adjustment.
When I first bought the car I removed the AFM black plastic cover and fiddled with the clock spring so I doubt that the tension is where it needs to be.
BTW the car runs fine except for an occasional idle droop/dip.

Any advice on what to look for in terms of optimum A/F ratios vs. load RPM and how to get the most of the stock fuel and timing will be greatly appreciated.

Thanks  Smiley
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