Air Fuels in between shifts

[turbo laser]

Well i am currently running a 16g at 18psi with a 2g maf, injen intake, turbo xs bov (recirculated), 3in turbo back, 560 injectors, with a safc2 and innovate wideband. Air fuels under light load are between 14.6-15.0, under boost 12.1-12.8. Whenever i shift though, the air fuels drop to about 10-11. Is this normal, if not how can i fix this? I have boost leak tested it, adjusted the biss screw.

 

[TTstealth94]

You should be seeing around 11.1-11.9 in WOT. And during your shifts you have a dramatic change in airflow so you will see a rich value for a sec, especially using a piggy back because its only tricking the ECU about the airflow.

 

[ramsack]

A/F should spike off the chart (infinite) to lean when you shift and go back to try to recover stoich around 1500 RPM. Reason being when the ECU sees the throttle closed and the revs are above 1500 it cuts fuel to all injectors.

 

[turbo laser]

well i mean once i let off the gas it goes to 22.0 which is infinite on the lc-1, but to recover the air fuels drop real low like 10-11 and then settles at 14.7ish