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i just put in a new volent cia with the new powercore filtre enclosed kit,looks sharp but am trying to figure out why its making my engine light come on and making my catylyst % warning go from 70 to 80 to 100% then back down to 70% then full then back down ect ect ect then after i drive for awhile the truck beeps at me 3 times then the catylyst stops doing that but the engine light stays on and then i'll be driving at a 100kmh again and then do that all over again this is freaking me out just wondering if the 2007.5 6.7L is not supposed to have one or what or is there some speacial sencors or other gear i have to add to make it normal ppplleease help:CRY: