dyno sim question

[88ss408]

hey i am wondering what is a H.P manifold ? when you type in your info in the exhaust part the ask if you have stock manis,H.P manis,small tube,big tube headers
so can anybody please explain the H.P manifolds ?

thanks

 

[custom442]

hey i am wondering what is a H.P manifold ? when you type in your info in the exhaust part the ask if you have stock manis,H.P manis,small tube,big tube headers
so can anybody please explain the H.P manifolds ?

thanks

Stock manifold would be stock or equivalent. Hi po manifold would be a performance aftermarket one, for example, from Edelbrock (or if you have a trick stock one - like old Buick air gaps).