Adding a can of B-12 Chemtool Fuel Injector Cleaner (part #0116) will not likely solver your issue. There are other options, such as the suggestion from a couple of month ago to another user on this forum:

Berryman Intake Valve & Combustion Chamber Cleaner (part #2611) can help with catalytic converter problems by helping to optimize the combustion process. However, you likely need to address fuel injector cleanliness, too. We recommend using Berryman B-12 Total Fuel System Clean-Up (part #2616) in the gas tank at a concentration of 1 fl oz/gal in order to thoroughly clean fuel injectors. As a bonus, 2616 will also help with intake valve deposits in older style engines as well as combustion chamber deposits.