marble mod blocks the pair valve , easier when just doin slip ons , pair mod i9s removing the pair system to save weight easier to do when instaling a full system since you have the headers removed anyways .
i think you can do the pair mod without removing the header but you need to hack up the pair system pretty good
bolth do the same thing just removing the whole system saves a couple pounds !
i think you can do the pair mod without removing the header but you need to hack up the pair system pretty good
bolth do the same thing just removing the whole system saves a couple pounds !
