Well I just installed Marcos CaTCHER ecm today and immediatly noticed that this thing can poooooooor some smoke if not careful. I have the stage 3 injector tips right now, but was wondering if anyone knows for sure if going to some of DonM's Mach series may clean up my smoke issues at all? At idle if I just punch it and let off at 2000 rpm I bellow black out of the stacks. Dont get me wrong I like smoke but I dont think the stupid emissions station will. I tow 10,000lbs+ somewhat frequently so I would be looking for a good strong and clean injector for this task. I also am running twins so once boost builds it does clean up, just worried about taking off. Altitude here at home is 6,200'. What are the suggestions? Thanks guys, I know someone will give me some good info.