Abstract: A support seal for use with a catalytic converter having a housing, which includes an inlet end cone, an outlet end cone, and a shell forming an internal chamber, and catalytic substrate disposed within the internal chamber. The support seal has an “L” shaped cross-section including a radial portion and an axial portion, at least one portion for supporting and retaining the catalytic substrate within the internal chamber. The axial and radial portion of the “L” shaped seal can be preloaded to provide support to the substrate in the axial and radial directions.

Abstract: A misfire correction factor is included in the calculation of the fuel pulse width so that upon detection of a misfire, the excess fuel that would normally have entered the engine is offset or canceled, thus reducing or desensitizing the effects of the reaction of the lean biased exhaust gas oxygen sensor signal. This compensation allows for normally firing cylinders to operate closer to stoichiometric air/fuel ratio when other cylinders are operating in a misfire condition. The fuel adjustment due to engine misfire not only protects against catalyst degradation, but also decreases unwanted emissions.