Air Fuel ratio for the 540i 6

bullsseye

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Manhattan Beach, Ca.
#1
Does anyone know of a tool I can use to adjust the A/F? When I had the car dynoed I noticed the A/F was in the high 11's. Typically you can push this into the high 12's, a little spark advance, and free up some decent power/torque.

So I was wondering if there is a programmer I can buy which will allow me to make these adjustments on the dyno.

TIA
 


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