Is there any benefit to installing larger injectors on an 03 ho, with a pmcr,edge already on it. I had an 01 with a 40 and the usual injectors and comp box etc. . and it will walk all over my 03?? What can i do to correct this and how do i get my o3 to smoke????. It barely puffs. In fact i htink the only way it would smoke is to set it on fire. Also any body got some good pics of 03-04 duallys with stacks.