hey i have a 2007 grand prix gt with s1x, cam, oer lifters yella terra rockers, 105 springs and modded retainers, 3.5 pulley, headers 3" down pipe, plugs and t stat and intake ect, and hp tuners and well at about 5100 rpm i reach 100% injectors duty and 23ms pulse all the way to about 136% and 25-26ms at about 6000-6400 rpm. with about 6kr at the 5100+ range. so what i wana know is do i need new injectors or should i start looking at fuel pump and its gay filter in the tank for the 07 if new injectors what should i got with i plan on doing more mods down the road. thanks.
