I have a 2001 Dodge 3/4 ton 4x4 ext cab. piped chipped and cold air intake. the chip i put in it is from van aaken. the reason i bought this one is it said that it would stay within the limits of the injection pump. the chip was only rated for 60 hp and 140 torque. can i go with a bigger chip, or bigger injectors. the cold air is afe. the exhaust is 4" straight through.