I am a bit surprised this is new to drag racing as road racing gt cars in the U.S. switched to large short collectors, over forty years ago; I remember reading an article on the Greenwood Car he dropped the long collectors for the H.P. increase with the very large short ones.
https://www.enginela...ers-with-kooks/
Edited by Bob Riebe, 11 October 2022 - 00:12.