My model is Y(X1,X2), where Y=CO2 emissions, X1 = gdp per capita, X2 = oil prices.
When i tested using traditional Granger causality, X1 and X2 do granger cause Y.
When i tested for granger causality with TY procedure, only X1 granger causes Y and X2 do not causes Y.
I would like to read your thoughts.
Bests.