Someone school me on header size.

In the above article 8 hp diff and about 2 lb of tq... between 1 5/8 and tti step headers, wouldn't even feel it.lol 179.00 vs 675.00 That test just basically said tti is raping you with the price of their headers.

Here's another one
www.google.com/amp/www.hotrod.com/articles/comparing-headers-and-manifolds/amp/

You gain more going from 2 1/2 to 3", if anyone cares. Haha