Dtc B1514

[tblu92]

Recently installed a 2600 stall converter and a 3.42 rear diff on a 98' A4
When the TCC locks up I get a DTC code P1514--says a problem with the correlation between the MAF and speed density setting and the throttle body (TAC)--never had that code before--don't know where to start looking--Any ideas ????--Goes in reduced power mode as well--

[tblu92]

Recently installed a 2600 stall converter and a 3.42 rear diff on a 98' A4
When the TCC locks up I get a DTC code P1514--says a problem with the correlation between the MAF and speed density setting and the throttle body (TAC)--never had that code before--don't know where to start looking--Any ideas ????--Goes in reduced power mode as well--

UPDATE--fixed---added 25% to the predicted airflow tables and that cured the codes--thks