hi

i would be interested, what this tables are for:

Fast O2 Rich/Lean Treshold vs. MAP
Upper Zero Error Reference for Slow O2 R/L vs. MAP
Lower Zero Error Reference for Slow O2 R/L vs. MAP

and how they can be modified for tuning eg. large cams, aso

Thank you

Those three tables define the actual AFR when in closed loop. The values are compared against the O2 sensor to move the integrator.

Up in the sticky's, in the Tuning Guide Book, under the '8063/'7747/'8746 ECM section. There is a paper on 747 Fueling. Even though it is a different maskId the principle is the same.

RBob.

thank you very much..

this is really an information pool!!