im buying a header for my n/a 1990 gxl rx7. i was wondering what is better for more hp gain, either a 6port header or a non turbo one whats the difference and what is better need to know kinda quick. all help apprectiated thanx all.

 

A "6 port header" means that car is an N/A.

A "non turbo one" means that the car is an N/A.

So what the hell is your question? You're asking which one is better between the same thing.

Which one's better: an apple.... or.... an apple?