is a dc 4-2-1 or a dc 4-1 better for drag racing on a b18b1 non-vtec motor i will never ever autocross and it will only be raced at the drag track and it is a daily driver. When you give me your opinion i want to know your reason too and also if you have information i can read then please give me a link to it.
thanks,
steven

 

i'd go with the 4-1 cause it gives better gains higher in the power band.

http://www.ap-engineering.com/header.html

most if not all the headers in the test are 4-1.