Hi, i have a 4-2-1 Exhaust manifold for my X16XE engine and i was wondering how to fit it properly, i know the EGR valve becomes redundant which i am blanking off when i fit the new inlet i have but i want to fit the 4-2-1 first. Also i know i need to remove the SAI, what do i do with the vacuum hose and about unplugging it, will the eml be on if i completely remove it? Also is there anything i need to know when fitting it? Cheers