0913 GMT - China's tepid GDP growth in August raises the probability of additional fiscal stimulus in 4Q, BNP Paribas economists say in a note. Based on the bank's estimates, real GDP growth last month was 4.3% on year. Policymakers may introduce new fiscal stimulus in October if 3Q growth slows to around 4.0% and if the economy fails to recover despite having support from fiscal measures. Economists say fresh stimulus measures may include more policy-based financial instruments, as fiscal policy is the most effective lever to counter short-term weak growth.