Hi , I had a Carbon fiber Haltech CAI installed on my 2015 Z06 , I also had headers done at the same time . Hard to say how much each piece made in regards to total power , but Long tubes , Haltech and tune at Mannys netted 605 rwhp . I chose the Haltech as it added a touch of color ( Carbon Fiber ) under the hood as opposed to regular molded plastic that's all .