the stock maf is usually fine and will work in this case. the mac cai is for bling facter. cai s do make some modest power and are a decent mod IF you buy a good one. stay away from the metal kits, heat +metal = hai. demolet, tunable induction are great kits. also the jlt is good. im pretty sure that is the name. just do a search. honestly, watch out for the mac and bbk. some things are fine, but i am not a fan of their quality. you get what you pay for