Check engine code on 1995 Eagle Talon P0422 Main Catalyst Efficiency Below Threshold (Bank 1). What should I do next?

Hello all,As the title says, I'll be running for the first time this summer with a methanol injection setup After some research, I did not find a definitive answer of the utilisation of methanol injection with the usage of a catalytic converter.I'll be using methyl hydrate with water as mix...