are larger diameter headers needed for 7-8xx whp or would this setup suffice? 1 5/8 stepped to 1 3/4 LT's w/ 3 inch collector, 3 inch OR/X, 3 inch catback?
IF I am looking to hit 750 1-7/8" hands down but you will 99% of the time have to run a different K-member. My 1-3/4" was fine with the stocker.
I think people say 1 5/8 are fine because then they can get Mac headers for a lot cheaper because if your going to spend the big bucks on headers might as well make it worth it and get bigger primary's.
So true. I think people want to make an excuse for why it is alright to buy the cheaper BBK or MAC. The 1-5/8" are better than stock I am not saying they are pointless I am saying if you are going through the nightmare of installing headers on the stock Kmember go correct and get Kooks or ARH and go 1-3/4".