As the title states i want to know if the AP2 headers allow more flow than the ap1's

 

i think they are the same.idk i migth be wrong.

 

I have taken very close measurements of both and could not find any differences. The only thing that I noted different was the mounts for the heat shield...I think that is the only thing that makes the part numbers different.

 

lol thanks. Well there goes my lil plan