Enable LTE 41 on custom rom? Cant get *#*#DATA#*#* topic

Hey guys, LTE 41 Spark has come to my area and I want to raise the priority of band 41 so that I can use it. On stock roms this is done with *#*#DATA#*#* and your MSL. Im running cloudy rom. The sprint dialer codes don't work. Any way I can enable them? I heard flashing a boot.img from a sprint rom can enable but I want ot check in with you guys first