Cordierite porous ceramic honeycomb articles

A porous ceramic honeycomb article, comprising:

• a fired cordierite body having an as-fired microcrack parameter (Nb3) of from 0.08 to about 0.25, an as-fired coefficient of thermal expansion (CTE) of from about 7.0×10−7/° C. to about 15.0×10−7/° C. over from about 25° C. to about 800° C., an as-fired surface porosity of from about 38% to about 45%,
• wherein, when the fired cordierite body is exposed to an acid wash, the fired cordierite body comprises an acid wash-induced microcrack parameter (Nb3) that is at least 20% greater than the as-fired microcrack parameter, an acid wash-induced coefficient of thermal expansion (CTE) of from about 1.0×10−7/° C. to about 10.0×10−7/° C. over from about 25° C. to about 800° C., and an acid wash-induced surface porosity of from about 38% to about 45%, wherein
• the fired cordierite body further comprises an as-fired and an acid wash-induced df of less than or equal to about 0.3, wherein df=(d50−d10)/d50, and
• the fired cordierite body further comprises an as-fired and an acid wash-induced db of less than or equal to about 1.5, wherein db=(d90−d10)/d50.