I dont have any factory trumpets and I don't plan on losing any power, infact I plan to gain some by changing them, heres number one of four of what I am making to replace them:
to fit inside the airbox I will use mandrel bends, it will look bizarre but it will work.
I have seen results of a test that showed that the air flow difference between a full bellmouth and a flare is 3%, so for now I will use this.
